I really like the game, but there is things i would like improved.
1. Better offline play, it would be cool to play with friends like in car with Bluetooth/NFC.
2. Weapon balance. I don't like the fact that all players have to go after the same items. Items should be good in different ways, matching your own "playstyle".
3. The rank system can be a little boring, there is only a rank for those who play a lot. What if you had rankings for most cube "matches" during a match and highest damage done?
4. Moooore spells. Everyone is using the same spells, and there is few variation in the battles. For example could unlocking achivments give you permission to new spells or defeating new monsters.