Quite possible. The need for secret IDs and the lengths the heroes have gone to to try and keep their IDs a secret has definitely been one of the major issues of the series.
I'd actually like to see the characters forced to take on new IDs. Change up the status quo a bit. Have them have to adjust to events in this series.
Why can't Superman disguise himself as a blond guy, just as an example. I doubt it would happen, but I think it would be a very logical, and progressive move. Fuck some trademarks and worrying about film and tv tie ins.
