To expand on Tornadus, I'm starting to realize that it takes a lot of the niche that NP Thundurus had, perhaps even better. It has better damage, the same speed tier and perhaps even better coverage. While Thundurus had to use multiple coverage moves, Tornadus can get it done with just focus blast. +2 focus blast does over 75% minimum to max spdef Goodra and it just so happens that our neutral Spdef wall (umbreon) is weak to fighting as well. Only needing two attacks means that you can either be boring and use heat wave or dark pulse, or you can be cool and run a utility move. I have been ruined by NP+substitute on ladder a few times because it just trades with 1.5 mons minimum if you switch out as it clicks sub, and sub also works well for prankster shenanigans. If they try to revenge kill with a scarf gapdos, if you click sub then you have traded 25% hp for information, and can now either tera steel to resist their brave bird, switch out or stay in because you see they clicked u-turn like a fool. Taunt is another option that can just break some walls even if they are able to 1v1 you. An umbreon at 40% might as well be dead. And then there are all the other annoying filler options that make the retched genies so annoying. Knock off and u-turn allow you to weaken something or keep up momentum early on and then come back later to sweep, and tailwind has the chance to do something funny. Of course the big drawback is that your most accurate move is 80%, not ideal.
If Tornadus really is the future, I'm looking forward to someone bringing the ultimate torn wall and winning an RUPL game. Make someone forfeit when they see bleakwind storm do 0 damage.
Okay, we actually got something, because if we didn't, I wouldn't be making this post. Mew is a classic case of jack of all trades, master of none. Main sets are going to be NP mew, spike stack mew and hazard lead mew. None of these sets will be amazing, but another option in the tier will be very nice.
#youtuber_gets_bad_mon_to_rise. Okay, feraligatr isn't that horrible, but it rising to RU isn't on my bingo card. Main issue with it is that gyarados is just better. Moxie allows gyarados to snowball better, its defensive utility is better with its typing and good special defense, and while feraligatr has higher power, power isn't everything.
Speaking of gyarados, yeah, this is a good ass mon. Resto chesto can setup on a lot of defensive pokes really easily, while 3A is still deadly. Just a good allround HO mon. 
Pom pom is one of those 'bitch mons', where its not broken, but oh fucking boy, it will make you tear your hair out facing it. It has two sets, the dual stab set which uses tera ground or fighting to make revelation dance hit mons such as goodra and registeel, while taunt sets made defensive teams living hell.
Feli would be proud rn. Registeel has shown itself to be one of the best defensive steels in the tier, with ID+BP being an insane wincon while still being able to get up rocks or paralysis something with thunder wave. 
I swear to fucking god, if UU blue balls us again, I am going to be so mad. Metagross would be such a great addition, giving another steel type while not being weak to fighting is good for dealing with gapdos. We have had this before in Gen 7 and 8, and while it was buffed a lot this gen, I can see it being a solid top tier option.
Ogerpon was something that people wanted to drop a while ago, but it never happened. However, it might happen now. Ogerpon is weird, mono grass is extremely bad, but its got everything else. Coverage, utility, setup. It is one of those mons that can pick and choose its counters extremely effectively, and with geezing potentially rising, this would likely be broken if my money is on this.
Uh, serperior. Ngl, thought this would take a lot longer to drop. Fast, able to snowball, annoying as all hell. Either this thing stays and is the biggest piece of shit ever, or its banned instantly.
Watch this get projected to drop, only for OU to take it back. But seriously, let us have blissey, I want to make removeless stall.
(Imagine this is the galarian form) Okay, so geezing would be an absolutely crippling loss for the tier. Its one of the most splashable removal options rn, and checks a butt ton of the meta. However, the only pokemon that I think would be banned from this is mamoswine, since other pokemon such as gapdos can at the very least be checked by talonflame, who will undoubtedly become a lot better. Mamoswine on the other hand, can't really be checked by talonflame reliably, and loses one of its best checks. But regardless, big loss.
This one also hurts. Fezandipiti is quite a nice defensive piece that can snowball, with it being able to beat greedy builds that pack subpar fairy answers. It will be quite a big loss, so I'm upset with this rise.
This is legit rising because of stall on RU ladder, which a-muk is the best on. A-muk is a decent special wall, with knock off+poison touch making a lot of switch-ins uncomfortable. But it can be a bit difficult to fit since it wants a lot of moves, so it is a bit surprising it rose.
Raikou has always been good. CM sets, SubCM, pivot, all are pretty great in allowing it to batter defensive pokemon in order to enable teammates. Not surprised by this in the slightest.
Gallade my beloved. Gallades shtick is that it beats defense, and beats it HARD. Not much in the tier can take +2 attacks from this mon, and those that can are very niche. It does struggle with mediocre special bulk and speed, but it can work well on teams that are looking to beat down defenseno matter what.
If you hve been watching tourneys recently, this one ain't a surprise. Gastrodon has established itself as a great defensive ground that can be quite versatile in what it can do from sticky hold phsyical defenseto storm drain special defense. Its a great spiker too, so yeah, not surprised by this.
Canard sample HO moment. Yes, this is literally only rising cause of being a HO lead.
Rhyperior is still good, so this is just a ladder thing. Rhyperior is an elite ground type with the ability to trade insanely favourably due to its high bulk and high power coupled with SD. I genuinelly do not know why this is potentially dropping, because I use it a ton and think its great.
Another ladder thing. Reuniclus is incredibly powerful in the metagame and heavily abuses those gastro+geezing teams that are popping up everywhere. My only guess of why it isn't used more is that other psychic types provide more defensive utility (despite the fact magic guard is really good utility), so yeah.
I'm lumping these two together because they both are primarily rain mons. Barraskewda can be used outside of rain as an offensive pivot, but its lack of defensive utility makes it hard to fit on teams. Rain as a whole isn't really great, as while the abusers are good, lots of the tier threatens to end the sweeps short. Maybe forre will also drop if politoed isn't used as much....
Salamence has certainly had an interesting trajectory recently. Before, while DD sets where still very good, special attacker sets were probably the better or at least, splashable ones. Now though, DD sets, particularly tera normal facade variants, have become the forefront of mence's sets, with some even considering it broken. It will be sad to lose the defensive sets, as they were a decent glue if you wanted more bulk for your dragon/flying, but not having to deal with the dd sets will take a bit of strain off the builder.
I mourn this loss. Now, slither wing has been worse lately as the dd flying mons have meant fimp isn't as useful, but damn, having powerful priority is still very useful against everything else. Just a bad loss ngl, slither wing had quite a bit of flexibility in its moveset that could be used that people haven't fully explored yet.
