Source: comicblah.tumblr.com
4. Squadron Supreme
Well, if DC ain't gonna make us a good Justice League movie any time soon, why not let Marvel take a crack at it.
The Squadron Supreme were originally intended as a JLA parody, but in a miniseries written by the sadly departed Mark Gruenwald, they were given free reign in the most underrated comic book I've ever read.
Squadron Supreme is just as much a deconstruction of the superhero genre as Watchmen was, but taken in a different direction. Watchmen asks the question, "What would superheroes look like if they existed in our world?" But Squadron asks the question, "What would OUR WORLD look like with superheroes in it?"
Both are fascinating and valid questions. Squadron is about how power corrupts and at what point we should question authority. And, holy heck, would it make a great stand-alone movie. No MCU connections needed. So good.

