Really, I just want to be able to hear the Gym Leader battle music more often than they let you in the game.

If this is going to be the supposed 'Gray/Grey' version, what I really want is for the Gym Leader's Pokémon roster pre-league to increase so they have more than 3. Granted, Brycen can't have more than 3 'til post league, but they can give Drayden and Iris a Deino for example and also give Burgh, Elesa, and Clay 1 or 2 more Pokémon. Not Lenora though, 2 is hard enough at that point.
You know I've always felt that not battling the Striaton Triplets in a 3-on-1 triple battle was a missed opportunity, so I hope they pick up on that at some point.