So, I'm not usually into this sort of thing, but what if we have a high school kinda of like Sky High (For lack of a better example) for our young hope-to-be heros? All the students are kids with, of course, super powers of some kind and they don't have to be kids of super heros. All the characters are freshmen at SHHS and they show off their powers. Each character can be the star of their own plot and stuff. Sound cool?