This could be an epic (and time saving) way of destroying spam builds without clearing all of a players bricks as well.
*Admin spawns bulldozer and destroys noobs build spam
But if it were to be made, it would have to be based on trusts just like the hammer or the wand, but if a super admin gets in it, it would switch to a mode that allows destruction of any brick.
Or, it could just destroy bricks in minigames only, like a regular weapon does. (not nearly as epic)