This is probably a lame take, but I do not personally feel the desire to ban anything from OU right now. After playing OU around the clock for 2-3 months for SCL, I spent the last week or two away, reflected a bit, and really do not think much stands out. The few things that stand out I do not think are worthy of a ban right now either. Please note I am not going to step in the way of any suspects that go garner sufficient support in the coming weeks, but this just represents my individual opinion on some hot-button topics in the tier.
Kingambit is actually the closest Pokemon to broken for me, but Dragonite, which is almost certainly the conventional pick, is a close second. I also will give my thoughts on Tera Blast, Light Clay, and Ogerpon-Wellspring, for whatever that is worth.
Regarding Kingambit, it’s just doing the same thing as always, but a tad less often due to role crowding. You’re still able to stop it with timely status or Encore later in games, Pokemon like Dondozo or 200 Iron Press Corviknight cover the majority of variants on bulkier teams, and offense that is properly constructed can suffocate it. I still find Kingambit to mandate resource preservation in order to assure you beat it. There are few actual hard checks/counters, and almost all of them end up losing to the wrong Tera Fairy/Ghost or Fire honestly. I’m not sure this makes it broken, I don’t think I would vote ban, and I do not see a world where it actually gets banned this late in the game, which is fine, but there’s a strain there.
Dragonite is easily the most controversial Pokemon in OU right now. It got ok survey support and people have spoken out about it a lot. Personally, I don’t find it broken and think the most devastating variants — Tera Blast Fly — have become a bit more predictable on certain structures and also a bit less common outright. What really makes things tricky is the lack in overlap between the different variants, so you’re trying to preserve counterplay to multiple different potential avenues. I do not find this strain to be too much since most variants individually have a lot of checks or counters, but I at least understand why people have gripes with the Pokemon given this practical range.
Tera Blast is the lifeblood of a lot of dynamic sweepers, permitting Dragonite or DD Kyurem to hit otherwise unrecognized peaks. I do not find the premise of Tera Blast problematic and I do not think enough users are broken (past or present) to warrant action on the move personally, but there are admittedly a lot of people who feel differently when going through the full applications of the move.
Light Clay and screens actually received some complaints recently. I personally think it’s playable and screens can be covered well enough. You don’t need Unaware or Court Change to combat these teams necessarily even, but they can surely help. I don’t find screens to be needing tiering action.
Wellspring I just find to be the face of “great Pokemon that pushes limits, but isn’t overpowered or broken” right now. Will definitely be grouped with any survey or included in any discussion, but not a priority for me personally.