Sawk: Ban. Has little to no defensive counterplay. Sawk is on another level of power between CB and perfect coverage. Any hope of revenge killing comes down to being faster, and nothing faster can ever switch in. Busted.
Galvantula: Ban. Galvantula is quite tough to maneuver around. We have a select few Spdef walls/tanks that can take Thunders and Bug Buzz's well, but they're also very exploitable or lose over time. Null takes every hit with ease, but it's too reliant on Eviolite if Volt Switch is clicked you're just boned. Spdef Throh can take hits similarly well, but if it wants to be a long term check it'll be forced to rest and be put in a bad spot. If Galvantula didn't have a way to hit all the grounds, I don't think it would be nearly as stupid. It simply chunks everything with it's dual stab, and hits all the volt immunes way too hard. Any defensive check doesn't actually beat it because you can never reliably stop Volt switch. Overall I don't think prep for this is good enough at the moment, but maybe in the future (aka dlc stuff) we could have it back.
Silvally Dark: Ban. lvally Dark is far too powerful of a breaker. Dark is a top offensive typing rn (see CB Liepard for example) and combined with the amount of options it has, nobody is safe. Psychic fangs hits Throh, and only takes a little chip to kill Rest talk outright at +2. Flamethrower hits Avalugg and Mawile (and tangela but rip :pray:), Iron Head hits Alcremie and any niche Fairy type like Shiinotic and Wiggly, Flame Charge allows it to outspeed common scarfers like Unfezant and Golduck. We've seen this story before with other Silvallys and this time is no different. You have to hope it isn't running the right coverage option for the MU, and if it is well gl hf. All in all not a big surprise that this is busted. 
Pincurchin: Ban. We have defensive answers like Roselia and Appletun, I just wonder how you can even switch in if you don't have one of those. Stunfisk doesn't like Specs Hydro, Quagsire needs to be Spdef or Water Absorb, Sandslash same thing as Stunfisk. It'll 2 hit KO and borderline OKO everything in the tier that isn't immune or one of Rose Apple. Not sure I really want this in the tier. We have powerful breakers, but Pincurchin feels like another level. 
Cursola: Do Not Ban. One of the strongest breakers in the tier no doubt, but has enough flaws to where I don't think it's too much. Bad phys def and bad speed + not the greatest typing defensively rn. All of those balance it out in my mind. 
Alcremie: Do Not Ban. One of the healthiest mons in the tier. CM sets are good at breaking but are always prone to status or not doing enough damage at +1. Offensive sets are scary but struggle to switch in on non resisted hits. It feels like builds should always have a way of dealing with Alcremie anyways. I like where this thing is at. 
Exeggutor: Do Not Ban. Ngl haven't seen much of this since tier shifts but there is enough offensive pressure atm that it isn't the scary breaker it was back in the day. Could easily change soon but between offensive pressure and a horrible defensive typing eggy can only come in on so much. 

Kangaskhan: Do Not Ban. Kangaskhan feels like an A+ breaker but without that extra oomph to push it over the edge. Kanga leads to generally more healthy meta games and I don't see this time around being any different. Great mon, nothing too over bearing right now. 
Silvally-Poison: Do Not Ban. Feels like Silvally-Poison is in a healthy state. Tspike absorber with a great defensive typing thanks to all the grasses running around. Breaker sets are deadly but struggle to get past things like Stunfisk. Easily could get out of hand but rn action doesn't need to be taken. 

Silvally-Bug: Abstain. I have 0 to go off of with this gonna be honest. Like with any vally, it can show up at some point and start breaking the tier. And with all the grasses running around that doesnt seem unlikely. But I have no experience fighting or using it in new meta. 
Perrserker: Unban. I don't think this will be the dominant breaker it once supposedly was. At the very least I'm willing to give it a chance in this new meta. We gained a couple answers, team structures are different enough, more offensive options are available. I'd like to see how steel cat does.