Idk why y'all are disrespecting the new batch of leaked mons. Sure they don't got ludicrous offenses right off the bat like Dragapult or Barraskewda, but they still got some deadly tools under their belt and if that can be done without worsening stat creep then hell yeah.
Obstagoon is one of the best stallbreakers available with its bulk and Guts Facade, as well as very likely being able to handle offense with Extreme Speed access courtesy of the new egg move transfer mechanic. Appletun's ability opens the door to all kinds of crazy berry stall combos with Recycle and decent stats all-around. Eldegoss actually has potential as a Regenerator fat mon now that Tangrowth's been purged, and as it turns out it actually covers Toxapex's weaknesses very well wink wink nudge nudge
Lest we forget, we aren't in USUM powercreep shitsville anymore. So much stuff has been wiped out that things that we could've dismissed as irredeemable untierable garbage once upon a time can now find a place. Maybe Coalossal or Thievul won't be OU or even UU, but depending on factors about them we still know nothing about like movepool, abilities or in the former's case their Gigantamax form they may not be necessarily condemned to bottom of the barrel tiers like ZU either.
Also, I think that Obstruct is a very powerful move that can even be used in Singles. While Obstagoon's Attack stat isn't very high, I'm glad it's bulky and fast so that it can break through any slower Pkm or weakened Pkm with Obstruct and one of its priority moves. It's as if Obstagoon had its attack stat doubled, I think.
Even if your opponent fears Obstruct, Obstaggon could, hopefully, pull off Belly Drum. While Gluttony would have been nice, its bulk should be enough to withstand any moderately strong moves.
Thievul's success depends on its movepool. It has decent bulk, so Unburden + Sitrus Berry shouldn't be much of a problem. If it got some way to deal with Fairy and Fighting, it could have a chance to shine.
Eldegoss surprised me the most. It is even different from Tangrowth in that it has superiour special bulk even though Tangrowth has more hp. I can see an Assault Vest being viable on Eldegoss, but that depends on its moveset.
Our new sheep isn't bad at all If it gets a reliable recovery move - and GF really seemed to have learned their lesson from last time -, it wouldn't be farfetch'ed, to be honest. It could have a place in monotype since as of now we no longer have Chansey, Staraptor or Porygon2.
The other normal Pkm isn't bad as well. It will probably have Strong Jaw given the dex entry. To differentiate itself from the sheep and Diggersby, let's hope it has some niche in VGC. Super Fang coupled with decent physical bulk is a start.
Then, on Bolthund or whatever its name is. It's surprisingly quite fast, but, as expected, it's frail. Its attack stats are a little bit low. However, it has access to Strong Jaw and appears to be a mixed attacker. Either way, it might be more effective as a revenge killer when all the opponent Pkm are weakened enough.
On another note, I feel like this is The generation with the highest amount of new fast Pkm.