Flash Gordon!  But it would have to be handled with an integrity that would be true to Alex Raymond's original Sunday strips from the 1930's and 40's---unlike that dreadfully campy 1980 version.  Can you imagine what a Flash Gordon movie would be like with today's CG effects?  WOW!

Green Lantern: Emerald Dawn

I am surprised that nobody has developed "The Adventures of Tin Tin" or "Terry and the Pirates" Both were making the rounds in Hollywood and I believe that Spielberg was attached to "Tin Tin" awhile back. He and Mr. Lucas borrowed heavily from Milton Caniff's "Terry and the Pirates" for their Indiana Jones films. Both of these properties could be major franchises for the studios.

What about Nick Fury (of course without Will Smith being interested in the latest adaptation because Nick Fury in my mind is always a white guy!)?  The Hasselhoff TV movie was OK, but I think someone else could do btter and make it like a new James Bond franchise in the vien of the old 1960s spy movies with the gadgets of a Bond film.