My only problem with this whole premise is that Clark (in the series and other fan fiction) thinks Lois is going to blow a gasket because he lied to her for only a year or two before revealing that he was Superman. It will now be over 10 years of lying about that little piece of information that Lois of course could care less about...
Who needs Nightfall? The Lois explosion alone could end life as we know it all by itself.
Mike