I don't think DC should follow Marvel exactly, but I think the one thing that has helped the movies is that they don't really deal with secret identities. Everyone knows who Iron Man is. Thor is Thor all the time, and there is no Donald Blake. Cap basically doesn't need one anymore. 40 years ago, it made sense in comics. Heroes weren't dealing with cosmic threats 24/7 so it made sense for them to have time for a secret identity. Now, does it really matter any more? One can argue Superman can't be Superman all the time, but how can he really get away with being Clark in this day and age? Plus, let's be honest, masks on the comic page don't always translate well to the big screen. Only Batman and Spider-man have gotten it right.