This is what I think.
Its going to be a Europe based thing which was pointed out by many.
I think contests are going to come back my next point will explain why.
I think that Hoenn is going to be remade and that you'll be able to explore it in this game. There's going to be way more contests in Hoenn than just at Lilycove. Maybe there will even be different contest locations like in the anime.
I also think that contests are going to come back because the game is supposedly in France and France is very Fashion forward.