Another thing that would be cool is more weapons or new maps and game modes

This problem is easily fixed if the creator wishes, but it is currently in a project called spritack.

And by the way you can say any other game modes that you can think of game modes.

he is busy on spritstacks

i hope after that he can try giving this game a  nice update 

this game does have potential to be a very good indie game

Or maybe not this game, but you can create united variants that explain the history of the war in united wanderers (io).