Would rather speculate about 2 weeks from now than read a psychology textbook anyways.
I just wanted to talk about some of the mons that I think have some potential.
Okay, I can already hear the guffaws but hear me out. While we can't be sure how many of the eeveelutions we get, I think it's fair to say that while the bulky ones (Sylveon, Umbreon, Vaporeon) aren't guaranteed to drop, discount Regieleki is gonna drop. The addition of CM to the eeveelution's movepools allows some like the aforementioned to run CM in the 4th slot of otherwise standard wishpassing sets to further function as a bulky wincon. However, in a slower, frailer metagame, Jolteon might just be able to pull off an offensive CM cleaning set in the same vein as SSNU Hone Claws/DD Aero. Now, obviously, you don't have the speed for scarfers, you still don't have coverage without investing your Tera, and you realistically aren't going to get more than a +1 boost to your SpAtk. However, you are the second fastest unboosted mon (and Electrode is garbo), your SpAtk is already at a respectable 110, and if you can't Tera, you should have another plan to beat Ground and Grass-types anyways. I've been theorymoning that Tera Water is probably the best overall pick (Volt Absorb is nice), Ice is if you really want to that Grass coverage at the cost of a worse defensive typing, Flying is you want to be really reactive, etc. Definitely not a world-beater, but definitely something to consider as a decent cleaner against offense.
Honestly surprised that there isn't more about this mon here bc on paper NU mon has the best typing in the game at a time when Knock Off distribution has been cut. Tinkatuff itself has Knock, but it also can lay rocks and even deal actual damage if you need it to thanks to Foul Play. Basically, its movepool is just good enough to fill 4 slots with good moves that bring value to a team. In addition, despite its NFE status, it has a pgood Spe, putting it above other bulky mons ans even allowing for some EV shenanigans if there's something you absolutely have to outspeed. Whether PhysDef or SpDef, the Tuff guy here can check a decent number of mons, notably being a great check to Dragalge if we get that mon for some reason. Definitely excited to try this thing out.
Dance Dance Revolution
You know that there are a lot of scary QD users when I (an unapologetic stall player) am legitimately considering putting Oricorio on stall just bc Dancer makes it a decent check to all of the QD users in the sense that uhhh... at least they can't out-boost you? Especially with the existence of Tera, the QD users are bout to be a serious problem. Personally, I think that Oricorio isn't staying if any of them drop, and frankly, even Liligant and Vivillon are gonna be scary. Now, not all hope is lost, as apparently Chansey is dropping to ruin everyone's day >:) and with Oricorio being at only 93 Spe, it's not... impossible to find decent Scarf options that outrun the QD users, not to mention the possibilities for strong priority users. However, the issue is that everything that isn't Chansey (who is extremely passive, like what are you gonna do, Thunder Wave and then 3 SToss?) can get their chances of checking the QD mons either a) through Tera or b) getting slept if it's a Liligant/Vivillon. This isn't even to mention the various mons that straight up shouldn't drop to begin with. Suffice to say that building is gonna be not super fun.
So... Many... HAZARDS!
Yeah, we get a bunch of rocks setters, that's just par for the course, but additionally, thanks to a combination of gen9s dex as well as greater distribution, there are a lot of decent Spikes users. Surely we have some equally decent hazard removal right?........ RIGHT? WRONG! The pretty safe assumptions for hazard removal we get may include Braviary, Oricorio, Frosmoth, Komala, Coalossal, and maybe Cryogonal. You might have noticed that Oricorio and Frosmoth are probably better off running QD sets and Braviary would rather SubBU. That leaves Komala, Coalossal, and Cryogonal, who are all fine spinners butnone of tem are particularly outstanding. Coalossal has a lot of potential as role compression but that just means you have 4MSS. Personally, I hope fire Oricorio drops so I can try my Talonflame with Dancer idea, but again, sane players should probably just click the funny QD button.
If you made it this far, thanks for reading and see you in 2 weeks on the ladder with some diabolical stall teams (okay maybe not all stall teams).