FireShredder24 actually since that is a good Idea I feel as if that alien weapon from the movie battleship would be a good idea.
I don't know what its called but its the first alien weapon we see in the movie its the (one that hits then explodes) but it seems like it would be too powerful so maybe it should have moderate damage but high EMP damage instead.
also I think there is a mad that adds halo M.A.C cannons into the game