Maybe a new type of weapon should be the boomerang. It would do more damage shots fired from a gun, but you couldn't throw it again till it comes back to you. Some boomerangs could grab items for you too. Also, you could charge it for better range, among other things.
Certain boomerangs would maybe plant bombs(on the floor or enemies), and others might shot at the apex the toss. Is this a good idea? What do you think.