Sources say Chi-Yu will also be on the radar.
Top Ten plot twists in smogon history, for certain [/sarcasm]
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So, recapping and commenting on the problem pokemon that now can, at last, be treated:
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Chi Yu: Quickban worthy, no one likes this and we're all waiting for it to be gone.
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Annihilape: Could be quickbanned without many objections and, if it isn't, will most likely be the first mon to be suspected this gen.
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Cyclizar/Shed Tail: Ban the mon or ban the move, also a case of "could be QB, but will certainly be suspected at least". Cyclizar is by far the bigger problem here and will no doubt be the one banned/suspected, with banning Shed Tail becoming a point only after Cyclizar is banned in case Orthworm were to raise back to OU and prove to be problematic.
+

Dragonite: surprised to see so few people comment on this beast, I definitely think it deserves a suspect and with reasonably high priority. Sure, many top tier mons are decent against EKiller Dragonite (Corvinight, Great Tusk, Dondozo, kinda Skeledirge), but its combination of high firepower, unrivaled +2 priority and ridiculous Multiscale-enhanced bulk (+bulky EV Spreads, it's not like you need Spd all that much) is crippling for pretty much any team. And with Roost, it can use pretty much any mon as set-up fodder.
For weaknesses, it's true that it struggles against the above counters without running niche, unreliable Special attacks like Hurricane (Great Tusk) or Thunder (Corviknight/Dondozo). It also seems to rely on Shed Tail, so it would be understandable to wait until Cyclizar gets banned... but I don't think it needs it as much as it's just it's greatest exploiter (cuz y'know, Substitutes are also affected by Multiscale)
+

Chien Pao: While often compared to Chi-yu, Chien-Pao is not as broken as it has bad bulk and a terrible defensive typing that makes it harder to come in and lacks the firepower in both stats and BP that make Chi-Yu broken (who also has decent Special Bulk and defensive typing). Still, it's firepower when Banded, Tera-Ice/Dark or both is still extremely powerful at a higher speed tier, and said Speed Tier also lets it be a better Set-up sweeper with SD than NP Chi-Yu was.
Definitely suspect-worthy.
+

Gholdengo: an odd entry for this section, Gholdengo is not inherently broken. He just warps the meta around it with a very broken and unheard of Ability. Defog, Thunder Wave and to a lesser extent, Parting Shot are just some of the moves that he just casually CANCELS all-together. Now, if this trait were to be on some random, low BST mono-Rock type mon, there would be no problem, but he is also a perfectly servicable mon with: a good typing both offensively and defensively in Steel/Ghost, access to a 120*STAB BP exclusive move, support moves like Thunder Wave or Trick, Set-up in Nasty Plot, recovery in... well, Recovery, and a stat-line that is screaming old-school Scarfer (with, again, Trick). And that's before we even talk Tera options, like the Tera-Elec + Air Balloon that was popular a while back. It's "broken" aspects are very specific, but the fact that he has ALL of these traits at the same time is what really pushes it too far.
Definitely Suspect worthy.
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Espathra: too predictable (50% read on Fairy or Fighting is the only "surprise" it may have, and Fighting is usually the scary one), too time consuming to set her up and too reliant on Shed Tail to stay on the field, only to still get shredded by priority and have bad bulk before setting up, becoming only decent if HB EV spread and +2.... By no means a bad pokemon, but she starts to feel too much like a one-trick-pony that isn't all that spectacular, and I figure she'd be even less so without Cyclizar. Still could understand running a suspect on her if need is felt, but her usage fell out of favor for a reason (to the point of making her stay in UUBL for the month) and don't think it's a priority or that she should be banned at all.
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Garganacl: surprised to see people talk about suspecting this, and even finch mention it may be in the radar... although I soft-agree. It has very good traits with high bulk, natural immunity to all status and a crazy move in Salt Cure that allows it to be threatening while being passive and set SR or Iron Defense to become very hard to kick out. But the problem is how it can Tera out of its only weakness in his Rock type and switch to Water, Grass, Fairy, Steel, Ghost... It is in an awkward position where almost all the good defensive typing share a weakness with Rock (Grass for Water, Steel for Fairy, Ground for Steel and Elec...), but that's a very small issue compared to how well it does its job. Still, needing to go Tera to fully work brings more problems than benefits on defensive pokemons IMO, and while I agree it's a good mon, I don't think it needs to be suspected, let alone banned.
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Roaring Moon: another mon I'm surprised no one mentioned, this mon's problems are all solved by Tera. In a meta with Tera, this thing can run a very wide variety of viable tera types, use them to fix it's middling defensive typing, get a free turn to set-up DD and then sweep entire teams. Tera-Elec is excellent with Tera Blast to reverse most of its would-be checks and counters (Corvinight, Dondozo, any random Tera-Water mon), where he also has access to moves like Earthquake, Acrobatics, STAB Jaw Lock and Iron Head to pick and choose its counters. It can also just be an offensive pivot with U-Turn, or a defensive one with high Special Bulk and Roost on top of its offensive capabilities. But I think Tera DD sets are what may push it to the point of a Suspect and I encourage people to test different Tera types on it to see for themselves. Admittedly, not a priority right now, but definitely can see it getting suspecting in the relatively near future.
Maybe Iron Valiant or Dragapult can be added to the list as more stuff gets kicked? Don't really think they're problematic right now, but could be.