The kid is going to be the linchpin between Lois and Clark/Superman. Superman can't really be a father, per se. Clark is the father, but obviously Lois doesn't even know that he is Superman. That's the part about this that really gets me, and sort of takes a bit of the shine from the movie.
I don't see how it's possible for Lois to remember that she slept with Superman, but not know that he's Clark? That's crazy? Did that one memory come back, and if it did then she should know it's Clark because he had already told her.
Again this harkens to this vague stuff, and the fact that stuff can't be that vague. It doesn't make sense even if you don't bring it up because that makes Lois look like a complete dumb ass that she slept with someone, let him all up in her, but she still can't get past the glasses.
That's why I'm hoping the next movie focuses on what them having a child means for their relationship. I doubt will see Sky High 2: Superboy. As I have said repeatedly, that sounds like bull**** and most of you folks are saying that because you don't like the idea and are just saying stuff to be saying it.
One thing though...if Lex knows or suspects the kid is Superman's than we may at some point see the kid going all out, ie. using powers, etc, especially if Lex tries to kidnap him or use him against the MOS. However, I think that will probably be reserved for the last movie.