I saw this idea on another role playing based forum, and it sounds hilarious!
Valley Magic:
You play the poor, long-suffering companion of a ditzy, valley-fied magical girl. Needless to say you're a genius by comparison. The enemies could be brilliantly unlucky mad science girls. Part of the challenge could be trying to not root for the other side too loudly...
Now, could you imagine a while team of Valley Magic characters? LOL