Hopefully this is the right place to post this, I didn't see a suggestions forum. A few ideas for powers:
Piloting - the ability to pilot an airplane, space ship, etc. This would be important for WWII-era war comics heroes and sci-fi heroes. Think Luke Skywalker. I don't think this is covered by flight, at least it doesn't seem like it judging by the high-ranked characters under flight.
Humor. Probably the Joker's greatest asset. Spider-Man uses humor to his advantage. And I see characters like Elmer Fudd popping up, so it might be useful for characters like that as well (unless you think Elmer can only truly be appreciated as a Weapons Master).