That would be an interesting implementation for the Game Corner, those potential mini-games you mentioned. Or they could at least have brought back Voltorb Flip of HGSS. I'm just hoping I don't cringe at whatever they do to Mauville Game Corner in RS3DS (hopefully, it'll be preserved from Generation 3).
I really didn't see the problem with Game Corners that much; it's been stuck in the games for four generations! T_T Though it would be weird to see the ESRB "Simulated Gambling" descriptor on a Pokemon box cover.
Agreed! Pokeathlon and Pokemon Contests (RSE-style) should return in future Pokemon iterations.