Confirming most people's beliefs (my money was on D-Man) it was recently announced that Joss Whedon's deal with Marvel to helm Avengers 2 as well as bring one of their properties to television will be focusing on bringing the super secrety spy organization to the small screen.
When you think about it, this is a project with nearly limitless potential. The lack of a central hero, instead of being a handicap, could open this to so many different things. Not only does Disney/Marvel have all their stars under contract, and thus are able to drop by for season finales or be featured for story arcs during sweeps, but it's the perfect testing ground for new B and C list heroes (and villains), individual S.H.I.E.L.D. agents, both canon and original, and science-fiction helicarrier office politics and monster of the week mash-up stories that not even the craziest Whedon fanfic writer has come up with.