I also look forward to the film. I'm not sure I like the idea of Lois having a child (who's the daddy?) but time will tell. Kevin Spacey may eat Hackman's Luthor for lunch.
I don't like the "S" belt buckle, don't see a need to change this, the big S on the chest is enough for me.
Don't forget Doc Savage.... debuted as a pulp character in 1933, ran until 1949. Clark Kent owes his first name to Doc Savage (a/k/a Clark Savage, Jr.). Doc also had a "fortress of solitude" in the arctic where he went to study, experiment, and stored weapons too terrible for the rest of the world to get hold of. Sound familiar?
Nice drawing by the way!