There's a chance that I change my thoughts once WCoP has ended due to the sheer volume of ORAS games that has occurred between qualifiers and all the way up to the finals, being involved is also likely to change my perspective on things. Although for now, these are my general thoughts on changes.
Rises:
:weavile: S- to S, it is probably pretty obvious by now that Weavile has crazy offensive pressure, most resists end up taking like 35% minimum and for mons like Clefable who can only switch into Knock Off, getting the prediction wrong and losing 45% from Icicle Crash can be detrimental. Not to mention, it is extremely fast and even has Ice Shard for stuff like T-Wave Thundurus.
:zapdos: A to A+, maybe this is just me but Zapdos is just amazing in this meta, while it isn't as fast as Thundurus or has access to Prankster T-Wave, it makes up by having Roost and Defog, the longevity Zapdos has goes a long way in games and it is the most reliable hazards removal with Defog.
:lopunny-mega: A to A+, with more mons shifting towards spdef rather than physdef, it makes room for M-Lop to really smash teams. For instance, mons who were checks to M-Lop like Clefable and Garchomp have been seen running spdef more and more which makes them vulnerable. M-Lop is still a massive threat to offense and hyper offense thanks to its superb speed tier and movepool.
:ferrothorn: A- to A, it should probably switch places with Skarmory as it is the more versatile spiker whilst still being a strong option for checking various metagame threats.
:scizor-mega: A- to A, as of recent, it has definitely expressed itself as a powerful option for both a sweeper and a defogger. Its typing paired with its natural bulk whilst having access to Roost sets itself apart from various other set up sweepers, giving it a ton of potential to sweep towards endgame. Defog + U-turn is also a deadly combination as it allows offense to thrive.
:charizard-mega-y: A- to A, perhaps my recent interaction with this mon has affected this placement but it is incredibly potent in most games, not many teams can consistently switch into its super powerful sun boosted fire moves and if you know what you're doing, you can even forego recovery for either 4 attacks or Will-O-Wisp to cripple potential threats.
:talonflame: B+ to A-, there's no question that its usage in general has spiked, especially spdef variants that are able to shut down fat or stall quite well, being a Serperior check and not immediately folding to Glare is handy too, along with the other various mons it can check.
:mew: B+ to A-, this is the minimum change it should get but there's a part of me that believes moving Mew up to A is not an absurd take. Mew is super versatile in what it can do but its best sets right now would include ho lead, rocks and plot.
:manectric-mega: B to B+, despite the heavy competition between both the electric types and megas, I still think that M-Mane is a viable option to consider especially if your opponent is an offense spammer. Its movepool and speed grants it immense pressure for those teams, the only issue is that chip is often needed since M-Mane often fails to OHKO.
:gengar: B- to B, not much to say apart from its well deserved rise and Sub Wisp + Hex being powerful.
:reuniclus: B- to B, even though psychics types are quite competitive, I think Reuniclus is not the most terrible option to pick, having Magic Guard is quite amazing and it has a vast amount of utility. I've been seeing it a few times on stall lately.
:aerodactyl-mega: C to C+, a similar case to M-Mane in the sense that M-Aero is incredibly threatening when played against an offense spammer, finding a switch-in to this mon is challenging without a proper counter like Slowbro. Although, with all the problems it has which I've mentioned in an above post, I can't really give it too much credit.
:alakazam: C to C+, regular Alakazam is usable, especially on spikestack structures which we did see during SPL. Magic Guard paired with a good speed tier makes it an option for some niche uses.
:celebi: C to C+, a fine compression option for teams that want hazards and a grass type who can check a few offensive threats such as Serperior, Keldeo, M-Diancie, M-Medi etc to some degree.
:sharpedo-mega: D to C-, somewhat of a cheesy mon but on some spikes hyper offense it can thrive.
Drops:
:metagross-mega: S to S-, fantastic mon but far from as reigning as it used to be, more and more counterplays against this mon has made it challenging for it to thrive as much.
:excadrill: S to S-, while it is still the primary option for removal, it just doesn't deserve the S ranking in my opinion. Mons like Clef are able to lure in excadrill and cripple it with either Knock Off or Flamethrower which affects this change too.
:volcarona: A+ to A, I feel like Volcarona is super carried by its presence in teambuilding and preview rather than its in-game performance, while it is true that it's still capable of sweeping teams, it suffers from 4 moveslot syndrome and with spdef Chomp on the rise, it'll just get more difficult.
:volcanion: A+ to A, usage has significantly dropped despite still being one of the tier's better water/fire type, depending on how you see it. Lack of reliable recovery and the ease of chipping it gives Volcanion a harder time to shine. Although, I still think some of its sets are still thriving.
:skarmory: A to A-, its usage just keeps dropping whilst the other spiker (Ferrothorn) keeps rising.
:rotom-wash: A to A-, despite its usage in SPL, I still believe that it should drop, competition from fellow electric types is far too high for people to consider Rotom Wash, not to mention, it's a lot more frailer than it makes it out to be.
:medicham-mega: A- to B+, I genuinely don't remember the last time I saw a M-Medi in any high level game, the biggest problem it has comes down to its speed as it struggles to keep up with the fast paced meta.
:gallade-mega: A- to B+, largely the same as M-Medi except it's better, usage of M-Gallade has tanked quite a bit.
:cresselia: B+ to B, with the rise of Mew, I find it very hard to justify Cresselia in many cases. While it is able to blanket check like half the meta, it fails to do much back as it is incredibly passive and can be easily taken advantage of. The only thing going for Cress is Lunar Dance but it has competition with Latias.
:cofagrigus: B+ to B, we are quite past the T-Spikes phase of the meta and those weird Cofa offenses just don't perform as well at the moment.
:gastrodon: B to B-, I don't think Gastro is that good, people don't seem to see it as much of an option on spikestacks as other ground or water types are more appealing.
:suicune: B to B-, this mon feels like it's hanging much on its past "glory", it loses to far too many metagame threats to be considered an option on most teams.
:azelf: C to C-, it struggles being a good ho lead when there are better options like Mew or Lando and it does nothing outside of that one role.
Watchlist:
This refers to mons who I think can potentially rise or drop but there isn't enough data for me to provide an actual response.
:metagross-mega: S to A+, by this, I mean the very top of A+ but I think there's a real chance that Gross drops here since it is just far from as omnipresent as it used to be.
:volcarona: A+ to A-, I just don't think Volcarona is all that asides from being an absolute nuisance for teambuilders.
:thundurus: A+ to S-, I might be the only person who actively plays this tier and thinks Thundurus is not as potent as everyone says. I am fully aware that it is incredible but I've not had an experience recently where I think it deserves S-.
:zapdos: Stays in A, this is likely the more realistic placement for Zapdos when we take multiple voices into account and A+ seems like a bit of a stretch, maybe near the bottom of A+ though.
:tyranitar-mega: A+ to A, there has been a drop in M-Ttar's usage despite it being a very strong mon which makes me feel like A+ is too generous when compared to the usage of the other mons in A+.
:charizard-mega-y: stays in A-, I am aware that Zard Y has not really shined as much as it should to deserve a rise hence why leaving it at A- is fine too.
:talonflame: B+ to A, there's a chance that this mon's usage further increases with days to come, rising it by two tiers is a stretch I know but it could happen with how Talon's been moving lately.
:mew: B+ to A, a bit like Talon, Mew has a very real chance to rise two tiers into A. In fact, it is more likely for Mew to be in A than it is for Talon due to the sheer versatility and skyrocketing usage it currently has.
:latios: B to B+, I've personally been experimenting a bit with Defog Latios recently and I think it's fine as a slightly niche removal option, especially on trade offense.
:heracross-mega: B- to B, I see M-Hera as a viable option on some structures like Beat Up offense or a few bulky offenses but its usage has not really demonstrated that it deserves a rise.
These are my general thoughts for changes, individual numerical placement is trickier to figure out but we could look into that during the post WCoP VR changes since I'm aware that the turnaround time between now and this following Monday is short.
Rises:
:weavile: S- to S, it is probably pretty obvious by now that Weavile has crazy offensive pressure, most resists end up taking like 35% minimum and for mons like Clefable who can only switch into Knock Off, getting the prediction wrong and losing 45% from Icicle Crash can be detrimental. Not to mention, it is extremely fast and even has Ice Shard for stuff like T-Wave Thundurus.
:zapdos: A to A+, maybe this is just me but Zapdos is just amazing in this meta, while it isn't as fast as Thundurus or has access to Prankster T-Wave, it makes up by having Roost and Defog, the longevity Zapdos has goes a long way in games and it is the most reliable hazards removal with Defog.
:lopunny-mega: A to A+, with more mons shifting towards spdef rather than physdef, it makes room for M-Lop to really smash teams. For instance, mons who were checks to M-Lop like Clefable and Garchomp have been seen running spdef more and more which makes them vulnerable. M-Lop is still a massive threat to offense and hyper offense thanks to its superb speed tier and movepool.
:ferrothorn: A- to A, it should probably switch places with Skarmory as it is the more versatile spiker whilst still being a strong option for checking various metagame threats.
:scizor-mega: A- to A, as of recent, it has definitely expressed itself as a powerful option for both a sweeper and a defogger. Its typing paired with its natural bulk whilst having access to Roost sets itself apart from various other set up sweepers, giving it a ton of potential to sweep towards endgame. Defog + U-turn is also a deadly combination as it allows offense to thrive.
:charizard-mega-y: A- to A, perhaps my recent interaction with this mon has affected this placement but it is incredibly potent in most games, not many teams can consistently switch into its super powerful sun boosted fire moves and if you know what you're doing, you can even forego recovery for either 4 attacks or Will-O-Wisp to cripple potential threats.
:talonflame: B+ to A-, there's no question that its usage in general has spiked, especially spdef variants that are able to shut down fat or stall quite well, being a Serperior check and not immediately folding to Glare is handy too, along with the other various mons it can check.
:mew: B+ to A-, this is the minimum change it should get but there's a part of me that believes moving Mew up to A is not an absurd take. Mew is super versatile in what it can do but its best sets right now would include ho lead, rocks and plot.
:manectric-mega: B to B+, despite the heavy competition between both the electric types and megas, I still think that M-Mane is a viable option to consider especially if your opponent is an offense spammer. Its movepool and speed grants it immense pressure for those teams, the only issue is that chip is often needed since M-Mane often fails to OHKO.
:gengar: B- to B, not much to say apart from its well deserved rise and Sub Wisp + Hex being powerful.
:reuniclus: B- to B, even though psychics types are quite competitive, I think Reuniclus is not the most terrible option to pick, having Magic Guard is quite amazing and it has a vast amount of utility. I've been seeing it a few times on stall lately.
:aerodactyl-mega: C to C+, a similar case to M-Mane in the sense that M-Aero is incredibly threatening when played against an offense spammer, finding a switch-in to this mon is challenging without a proper counter like Slowbro. Although, with all the problems it has which I've mentioned in an above post, I can't really give it too much credit.
:alakazam: C to C+, regular Alakazam is usable, especially on spikestack structures which we did see during SPL. Magic Guard paired with a good speed tier makes it an option for some niche uses.
:celebi: C to C+, a fine compression option for teams that want hazards and a grass type who can check a few offensive threats such as Serperior, Keldeo, M-Diancie, M-Medi etc to some degree.
:sharpedo-mega: D to C-, somewhat of a cheesy mon but on some spikes hyper offense it can thrive.
Drops:
:metagross-mega: S to S-, fantastic mon but far from as reigning as it used to be, more and more counterplays against this mon has made it challenging for it to thrive as much.
:excadrill: S to S-, while it is still the primary option for removal, it just doesn't deserve the S ranking in my opinion. Mons like Clef are able to lure in excadrill and cripple it with either Knock Off or Flamethrower which affects this change too.
:volcarona: A+ to A, I feel like Volcarona is super carried by its presence in teambuilding and preview rather than its in-game performance, while it is true that it's still capable of sweeping teams, it suffers from 4 moveslot syndrome and with spdef Chomp on the rise, it'll just get more difficult.
:volcanion: A+ to A, usage has significantly dropped despite still being one of the tier's better water/fire type, depending on how you see it. Lack of reliable recovery and the ease of chipping it gives Volcanion a harder time to shine. Although, I still think some of its sets are still thriving.
:skarmory: A to A-, its usage just keeps dropping whilst the other spiker (Ferrothorn) keeps rising.
:rotom-wash: A to A-, despite its usage in SPL, I still believe that it should drop, competition from fellow electric types is far too high for people to consider Rotom Wash, not to mention, it's a lot more frailer than it makes it out to be.
:medicham-mega: A- to B+, I genuinely don't remember the last time I saw a M-Medi in any high level game, the biggest problem it has comes down to its speed as it struggles to keep up with the fast paced meta.
:gallade-mega: A- to B+, largely the same as M-Medi except it's better, usage of M-Gallade has tanked quite a bit.
:cresselia: B+ to B, with the rise of Mew, I find it very hard to justify Cresselia in many cases. While it is able to blanket check like half the meta, it fails to do much back as it is incredibly passive and can be easily taken advantage of. The only thing going for Cress is Lunar Dance but it has competition with Latias.
:cofagrigus: B+ to B, we are quite past the T-Spikes phase of the meta and those weird Cofa offenses just don't perform as well at the moment.
:gastrodon: B to B-, I don't think Gastro is that good, people don't seem to see it as much of an option on spikestacks as other ground or water types are more appealing.
:suicune: B to B-, this mon feels like it's hanging much on its past "glory", it loses to far too many metagame threats to be considered an option on most teams.
:azelf: C to C-, it struggles being a good ho lead when there are better options like Mew or Lando and it does nothing outside of that one role.
Watchlist:
This refers to mons who I think can potentially rise or drop but there isn't enough data for me to provide an actual response.
:metagross-mega: S to A+, by this, I mean the very top of A+ but I think there's a real chance that Gross drops here since it is just far from as omnipresent as it used to be.
:volcarona: A+ to A-, I just don't think Volcarona is all that asides from being an absolute nuisance for teambuilders.
:thundurus: A+ to S-, I might be the only person who actively plays this tier and thinks Thundurus is not as potent as everyone says. I am fully aware that it is incredible but I've not had an experience recently where I think it deserves S-.
:zapdos: Stays in A, this is likely the more realistic placement for Zapdos when we take multiple voices into account and A+ seems like a bit of a stretch, maybe near the bottom of A+ though.
:tyranitar-mega: A+ to A, there has been a drop in M-Ttar's usage despite it being a very strong mon which makes me feel like A+ is too generous when compared to the usage of the other mons in A+.
:charizard-mega-y: stays in A-, I am aware that Zard Y has not really shined as much as it should to deserve a rise hence why leaving it at A- is fine too.
:talonflame: B+ to A, there's a chance that this mon's usage further increases with days to come, rising it by two tiers is a stretch I know but it could happen with how Talon's been moving lately.
:mew: B+ to A, a bit like Talon, Mew has a very real chance to rise two tiers into A. In fact, it is more likely for Mew to be in A than it is for Talon due to the sheer versatility and skyrocketing usage it currently has.
:latios: B to B+, I've personally been experimenting a bit with Defog Latios recently and I think it's fine as a slightly niche removal option, especially on trade offense.
:heracross-mega: B- to B, I see M-Hera as a viable option on some structures like Beat Up offense or a few bulky offenses but its usage has not really demonstrated that it deserves a rise.
These are my general thoughts for changes, individual numerical placement is trickier to figure out but we could look into that during the post WCoP VR changes since I'm aware that the turnaround time between now and this following Monday is short.
