Finally, I'd like to give my personal thoughts on the drops, and how they'll reshape the meta. This is not representative of the general thoughts of Council, just my own independently:
Swords Dance, a Rock typing, and a usable 75 base Speed make this a potentially potent Sword Dance user. It also has interesting utility in Rapid Spin and Knock Off, though it can't run both at the same time. So far I've struggled to make it work due to its frailty, but I have hope Anorith will be a solid pick in the future.
I'd say Ariados is largely outclassed by Beedrill as a pure Bug/Poison-type attacker, but higher attacking stats and access to Psychic will likely give it some niche. I don't have super high hopes for it, but Ariados definitely has some traits to make it worth using.
Beedrill will likely be a very solid Swords Dance user with its STAB Sludge Bomb and decent Speed. Access to Brick Break also lets it slam Rock-types for big damage. It unfortunately gets cooked alive by Quilava and Ponyta, which can easily cut its sweep short, but Beedrill might be the last thing defensive teams want to face.
With Deep Sea Tooth Clamperl can reach a Special Attack stat higher than that of Mewtwo, which'll probably make it the scariest wallbreaker in the tier. Even something as absurdly bulky as Noctowl can be threatened by it. For now Clamperl is held back by its terrible Speed, which tends to force it to not invest in its bulk, though I can see Clamperl becoming a massive issue and possibly even banworthy in the future. Using Deep Sea Scale to boost Clamperl's special bulk is also an option, though I doubt it's worth skipping out on the sheer power Tooth provides.
Delcatty will likely do similar roles that it did before its ban, but an overall much stronger metagame and more powerful Pokemon able to do its niches will make it considerably worse.
Really cool-looking physical wallbreaker. It doesn't totally outclass Aipom since it's slower, but its higher Attack, secondary STAB in Drill Peck, and access to Quick Attack could lead to Doduo becoming the quintessential physical wallbreaker of ZU.
Haven't seen people use this or talk about Drowzee much, but it'll probably be a usable special tank carried by its access to Thunder Wave.
Graveler is actually slightly physically frailer than Rhyhorn, but it doesn't matter since Graveler is an upgrade in basically every other way. It hits harder, has slightly higher special bulk, is faster so it's harder to Speed creep, and it has access to the all-important Boom. Despite its numerous typing-related issues, Graveler will likely become THE Normal-resist of the tier, especially with Lairon and Corsola's bans.
Flaffy is an interesting mon, possessing good bulk and the amazing Heal Bell. People have been using it a ton, though I predict it'll fall off as people begin punishing its use more and more.
I haven't seen a single person talk about this mon ever, so I have no idea what it'll do. Its stats are pretty eh, though it could find some use on rain teams.
This is a certified GSC ZU moment. Magby's good Special Attack, high Speed, and good movepool will likely make it a strong special attacker, but one that is held back its frailty and ZU's plethora of excellent special walls and tanks.
Returning after it rose to PU like 3 years ago, Meditite hits absurdly hard thanks to its ability. However, its easily overwhelmed by the tier's plethora of faster attackers, and Meditite's meager coverage can let some walls like Koffing actually take it on.
Noctowl is absurdly specially bulky, with its weakness to BoltBeam often not mattering at all when they fail to 3HKO. This Pokemon is essentially Delcatty on crack, capable of taking on absurdly powerful foes like Clamperl. However, Noctowl is hardly a one-Pokemon army, as it suffers from a lack of reliable recovery, a mediocre offensive presence, and only alright physical bulk. Noctowl has clear flaws, but it will likely cement itself as one of ZU's staples.
Porygon has often been compared to pre-drops Castform, though it's arguably more versatile and has Recover. So far Porygon has been nothing short of amazing, primarily taking pure defensive roles though these are likely the tip off its immense potential. Its influence has gotten to the point where Ponyta often runs the useless Run Away in order to not give Porygon Flash Fire through Trace. Also, while Shedinja has ways around Porygon, accidentally making Pory almost invincible by tracing Wonder Guard is some of the funniest shit imaginable.
Once again freed, Quilava has emerged as a brutally powerful special wallbreaker in ZU. However, this time it does have strong counterplay in foes like Noctowl, Porygon, and Flash Fire Ponyta, the latter also doubling as strong competition. There were fears that Quilava would be too much, but so far it has settled in as an excellent but balanced force.
Another GSC jumpscare, Smoochum's elusive Psychic and Ice STABs will likely make it a solid special attacker, though it's held back by its extreme frailty and mediocre Speed for an offensive Pokemon.
An interesting pick with its high special bulk and interesting utility, though mostly outclassed as a bulky Water and Rapid Spinner by Wartortle.
I've seen people theorymon this mon more than actually use it, but it does look like it has a lot of potential with its really good Speed, pivoting potential, and access to either a spammable physical bug STAB or boosting potential with Tail Glow.
Wartortle's good bulk has likely made it ZU's quintessential bulky Water, staving off numerous threats like Graveler and Quilava.
Weepinbell seems largely outclassed by Gloom due its better bulk, but higher attacking stats likely give it an niche on very offensive builds, notably Sun teams.