An upgrade for faster income ,some kind of animation wjile waiting for income and some minigames would make this game reallly cool. ( Its an awesome game btw ecspeciially if its your first)
You should get something for assisting some one i a kill. The host of a game should be able to do more things like put friendly fire on or off and kick people. Their should be an In-Game option to switch to the team with less players. Also a third team would nice in the larger maps.
A person that moves around and interacts with things would be cool, if there could be 2 kinds of people that will fight each other that would be awesome.