Re: Your Biggest Superhero Movie Pet Peeves
Getting basic characterization wrong. You can play around with the little details and such but when you fundamentally alter an established character then you've gone too far. If you don't think a character will work then use another one that will instead of changing the character beyond recognition to make them fit what you want to do. Or make up a brand new character to fit your film. Of course this is a layered thing. Main heroes and villains should be faithfully adapted. Lesser supporting characters have more leeway.
You know, it occurs to me that Captain America is basically the superhero equivalent of Mary Poppins. Practically perfect in every way and all that stuff.