(No "GO PLAY COUNTER STRIKE IF YOU WANT THIS NOOB" please)
I was thinking of a new camera so that when you die in a minigame, you can't come back until everyone dies, and while you are dead, you can follow anyone in the game using a chase type camera, you could also view through their eyes or have an F8 type camera to zoom freely.
The other idea is a wand that sets certain bricks to be "bomb zones" and a bomb item that only certain people can have, and it can only be placed in the set bomb areas.