Hi, I have some suggestions to make this game more fun, I apologize for suggestions that are already posted.
1. A Deathmatch mode. As far as I can see now there are only co-op matches. It would be awesome to battle other players!
2. Friends List. If we could add friends it would be easier to invite them to our matches. There is a friend system in Game Center for iOS. But it is not possible to add players ingame.
3. Display names. People seem to desperate for this.
4. Trade center, where people could trade items to each other.
5. Voice chat. This would be so helpful while doing a lot of maps
6. (Achievement) Capes. A cape is a great idea for equipment, but it could be an achievement for when people completed all quests or something like that.
Private Message me if you need anything.