Make a mode that is not multiplayer, I like the idea of the map being black or white depending on whose side you are on. Hero should be more than just a sqaure, like the background, more maps would be nice. Create a leveling system that saves whenever the player comes back to the game. Music and sound effects are a must. More weapons, have team A.I. for the players that aren't in the game so the teams are balanced. Overall this holds a lot of potential but it is missing a lot of components