Donald Draper wrote:
The secret identity has worked in various mediums for ummm 75 YEARS!!!!
I wouldn't want to lose the angle entirely, just have Lois in on it. Other than that, there's nothing worth dwelling on. All the "Is Clark Superman?" stories have already been told, so having a secret identity is really just a means to an end to give Clark a day to day life that doesn't always involve catching planes and rescuing tree-bound cats.