It would be nice if we could prioritize the homing missiles. Sometimes there's a bunker or tank decimating me while the homings all go for a rifleman in the other side of the map.
It would be awsome if a team member would step and be leader once your leader dies. You need the special powers too much, so if a leader dies you might as well start the level over.
Yes, level select and level editor would be awesome. This game is so simple in mechanics, but it's one of the games I have played the most on Kongregate. Great for relaxing five minutes.