I'd like to suggest another Admin Tool - Antimatter. It would work the same as sponges, but it would destroy everything around it. This way people don't get carpal tunnel clearing out huge swathes of land.
Edit: I just realized I posted this in the wrong forum, sorry.
This is essentially just dynamite without a fuse; a previously suggested idea that was largely criticized for the power it would grant to griefers versus the existing ability to clear land quickly with a map editor.