It's been done. Rarely done well, but it's been done.

Also, why does superman have to be realistic? It's a about the last survivor of an alien race who can fly and tank artillery fire and not even call it a massage. Seriously, insistence on realism got us The Dark Knight Rises and Man of Steel. I fail to see were it's a good thing were comic books are concerned.


And Reddish, maybe he doesn't have to, but good luck convincing anyone outside of marvel studios in hollywood of that.