Feeling Super Enough?

Another game likely to be on next year's prospectus is a high end supers game, one in which I make use of all of my various theories like gestalt personalities, niche protection pricing, and most importantly League style play. The goal is to get something that feels like Grant Morrison's JLA, preferably in a world built from the ground up in collaboration with the players - something League style play should make easier. 

( Having just re-read Morrison's run on JLA, I have one observation and one concern.  )

Can anyone with more Indy games experience than I have point me in the direction of things like this that others have experimented with, or care to offer advice.