I'm kinda interested in this. I have two preliminary ideas for quirks. The first being a quirk that is similar to a video game's inventory system, able to store and remove things from a [url=http://tvtropes.org/pmwiki/pmwiki.php/Main/Hammerspace]hammerspace[/url] meaning they will have to store things that assist with hero work/villainy rather than having actual super human attributes. 

The other is less creative, but I like the name "Pinball Wizard" for a guy with Magneto powers :P