Raids in SwSh are a joke so it's definitely a lot easier to get candies to level Pokémon there. 4 and 5 star raids in SV are challenging to where you're not guaranteed to beat it, meanwhile.
Of course, not every Pokémon is in SwSh, there are notable holes, so there's still merit to grinding SV raids. The problem is you are expected to have trained your Pokémon in terms of EVs... and the multiplayer has a lot of technical and design problems on top of that.
I've been kind of mixed about this myself.
Keeping certain mechanics to certain games (and their subsequent rereleases/remakes) make those games more unique in their own ways. And then, of course, there's the pandering in the live service spinoffs like GO.
But at the same time... yeah, I'd like to see certain mechanics come back. I don't miss Seals (or Contests, really), but I wouldn't be against Megas making a surprise return someday.
I don't mind Mythical distributions being mostly online nowadays, but I would love to see the in-game story events that you had to go through make a return.
For all of its flaws, I think BDSP did that quite well.
Happiny's in, no worries there.
Are you trying to keep it to the regional Pokedex, or are you okay with transfer-only Pokemon like regional forms?
Yeah that's also annoying. SwSh has the same problem at times but it feels like they're a bit rarer in SV...?