The minimap in a separate screen!
Okay, the minimap is a fine thing ... but it is also a pain. It is in the same window as the main window. Miss-click in it when you just want to move down to the right and you just killed yourself by moving up to the left.
Make the minimap a separate window that can even (shudder!) be placed on a separate screen! Make it sizeable as a window (two monitors, and you all the sudden have a whole screen as a minimap)! I'd LOVE you riot. I'd even buy RP!