Speaking of music, I'm kind of disappointed in the lack of Johto and Unova Pokemon music. How VS Red, Johto Gym Leader, Unova Elite 4, Driftveil City, VS N and Unova Victory Road got skipped, I got no idea. Certified bangers. I can get that National Park would have been too chill though, as great of a track as it is. I can totally understand not getting a Pokemon from each game, not a big deal to me, but I do feel like the music could have been spread out a bit.
Glad Hoenn got more cool stuff though. Steven's theme and it also got a great Victory Road track from Brawl.
For ARMS, I think SSF2 getting tracks for each fighter could be done for them as well. I wouldn't be too surprised if we got a couple remixes, as it's rare to do nothing but ports. As long as I get Dr.Coyle's and Misango's themes I'm happy. But most of ARMS' music is pretty good, so I wouldn't worry too much about the selection, there's hardly any outright bad choices.