Black Bold: Agree
Red Bold: Disagree and therefore I nominate it for something else
S -> Meta Rank
First off I agree with Meta-Rank thingy because most of the VR I have seen in different metagames have S+ defined as something that can fit into any team archetype, is nigh mandatory in all teams, can fulfill any roles, and is able to check dangerous threats on its own. Probably you might have noticed that I am talking about Ubers Primal Groudon at this point. Until yesterday I thought Chansey should be in S+ rank due to it being a nice backup member on most teams that fits in HO / balance / stall but teams still perform better without Imposter and anyone with slight knowledge towards metagame knows how to Imposterproof. I think putting Chansey in "Meta-Rank" is the way to go. P ambiguous mon to rank tbh.
Leave it on A
Can you all please stop overrating this guy that does nothing without Sleep-inducing moves? The only niche this guy has at this point is requiring 0 team support and doing some nice cleaning once its checks are taken out. That makes A appropriate place for Regigigas to stay, but not in A+ rank. Against any team with Giratina / Zygarde / Facade-Resistant Magic Bounce walls, Regigigas can do exactly nothing but just Spore them and just switch out to Diancie or other things. It has obvious answers that hard walls it, and it doesn't have a counterplay other than by making a gimmicky set like Facade / Core Enforcer / Shell Smash / Imprison which is walled by Steel-types and is shut down by Unaware / Focus Sash revenge killing.
A -> A+
First off Pdon is gone, that is huge. Now Solgaleo can stop mindlessly spamming U-turns fearing Pdon switching in. Second, as much MMY is prevalent, Solgaleo is now one of the most consistent answers to handle Psychic Surge variants which can be very threatening. Also AV regen sets are not the only viable set it can run. Due to V-create becoming a norm for -ate users that struggle with Steel-types, Flash Fire sets work as a great lure to Diancie (which is probably the best -ate user we have at this moment) and its great natural bulk lets it handle Boomburst well enough.
A -> A+
I'm not sure if you guys made a typo or something but demote Audino? Like wut? Couldn't people see PH Giratina everywhere after Pdon was banned? Barring stuff like Solgaleo Audino handles any 'mons that appreciate the absence of Pdon and is now a staple on stall teams in a form of Magic Bounce / Unaware / Poison Heal. Probably the most prevalent wall at this moment along with Solgaleo and Registeel.
A -> A
Another unveiled 'mon that appreciates Pdon's departure. This guy can now run Lava Plume over Scald in PH sets to more effectively threaten larger portion of the metagame. This might sound minor but it is actually huge, especially when it come down to PP war with Prankster Registeel. Also it can harass Solgaleo in much better way.
B+ -> A
Funbot28, MAMP, and others repeatedly said this in Discord and other places but for those who don't know, this guy has 0 switch-in barring Shedinja and uncommon Poison Heal Zygarde-C. Nothing else in the metagame can punch holes better than Mega Kangaskhan at this moment. I mean, if you'd say taking off 3/4 health out of everything is not busted, I don't know what else to say.
B+ -> B
Here is why:
Gen 6 BH analysis in Smogon Dex Page said:
Arceus's even distribution of stats reflects its ability to perform a variety of roles. However, the comparative mediocrity of a base stat of 120 in the Balanced Hackmons metagame makes Arceus a jack of all trades and a master of none. It neither hits as hard nor takes hits as well as Pokemon with more extreme stat spreads.
Still a decent Pokemon to use
as Arceus-Poison but compared to Dialga / Shedinja / Kangaskhan, it is far worse and has limited niche.
UR -> B+
I think Pdon can rise to B+. Defensive sets excel at checking Diancie, and forcing out Magic Bounce user that is not called Giratina and Zygarde-C to set Stealth Rock is great. I have been doing that lately, it works most of the time. Also it shuts down standard PH Kyogre that runs Moonblast as coverage most of the time. Although it is far less threatening than Primal Groudon that is not strapped of item slot / ability, it is still great at forcing out tons of switches and Shift Gear set can be deadly late game once its checks and Imposter has been taken out.
Abstain
B -> B+
The reason is very simple, Primal Groudon is gone. A monster that lives +2 Draco Judgment and OHKO's back has been caged. Also Zekrom appreciates increased usage of Audino, Giratina, and other walls and is able to run variety of sets to pressure defensive teams. Honestly so many teams are unprepared for Electric-types because Zekrom is p much the only viable Electric-type 'mon aside from Xurkitree.
B -> B
I was bashing this mon earlier but a threat is a threat. Also it can't be compared with stuff like Deoxys-A or Kyurem-W at all imo
Unranked -> C
Relevant mon after Pdon ban but it is very one-dimentional and is walled by too many things
C -> UR
D -> UR
The trash goes in the trash