1. No actual proper placement of housing items
2. Scripted Savage, EX and Ultimate battles, should be done by AI, so each time it is a different experience and no guides or videos can provide info, you got to be there in the now kind of situation rather than doing what someone told you to do.
3. lower tier and higher tier PvP need to be better seperated, no silver/bronse players in gold, platinum fights.
4. would be nice as knowing my way around music to be able to play more than one tone or note on the instruments at the same time, instead of them having to be played in order.

Honestly I got nothing too bad to say about the games and some of things inside the game I love, some I am not doing at all, but others love it.