To be honest, the only things I REALLY want in this game, are:
- Being able to transfer your pokemon from Gen V to Gen VI.
- Being able to play online 6 vs 6 AND level 100 easily on wifi. No more 3 vs 3 lvl 50 crap. Also not being able to see the opponents team would lead to more unpredictable matches, which is good imo.
- As mentioned before, the power creep. The average Gen V pokemon is way stronger than the average Gen I/II. Gamefreak, please no more 140+ Atk/SpA mons, unless they're legendaries.
I trust Gamefreak to do everything else well (or amazing).