It seems Joss isn't 100% certain about returning to direct the second movie. In the event that he doesn't, who do you think could successfully take the reins? My mind jumped to Steven Soderbergh, given how he's juggled large all-star casts before (the Ocean's movies). I also liked how he staged and shot the fight scenes in Haywire, and could see him having an interesting take on superheroic action sequences. It would probably never happen though, as he tends to do his own thing, also because he might be done with filmmaking for a while. Any other suggestions?