Ah, okay. I personally liked the roster for the Elite Four but I do see what you mean. Well, didn't they make it where you could re-fight gym leaders/elite four and their roster would be updated (or, in black2/white2, have that huge tournament)? Gamefreak usually moves such features overs since they're quite popular
Seeing as I doubt Gamefreak is just going to surprise us all and give us a remake over the next 7 months, I'm pretty sure that with just the graphics for X/Y, people will be clamoring for a remake in them (especially if the look sticks). We don't really need some revolutionary new way in game play to make a RSE remake (at least that's my personal opinion).