IC: GMless, Randomly-Generated Marvel Heroic Roleplaying?
Everyone does. The Doom Pool sits in the middle, and if you introduce, say, a rogue Sentinel, you build his dice pool, roll for him, and provide the results.
If the players need to know the temperament of the bouncer at the club where Dazzler is performing, there's a chart for that.
If you're not into a wild ride based on randomization, that's cool too. There are plenty of structured games kicking around the site. :)