I think it would be a lot more fun if writers just went with it and really explored the idea of a world where death is meaningless, but only for some people -- like, why do some people come back, and others don't? How do characters react to that? How do the bit players react to it seemingly only being the superheroes who ever get a chance to return and not their beloved Aunt Dottie? Or ... does Aunt Dottie come back from the grave, and we just never see it because she's not a superhero? Etc.