Wow, that's actually what they had planned to base season 5 on?
I haven't seen the final episode even the whole season 4 so I don't know what really happened or even about the baby. L&C was broadcast here in Manila but not after the show actually ended. I remember it was 1998 and the girls at my school were ogling over at Dean Cain. Back then I don't really watch the show ( I was 12, what do I know) But I have a faint memory of one episode it was Clark & Lois kissing while going inside a house(?) then people yelling 'surprise'(?) that's all I remember but it caught my interest then. I think I've seen few more episodes but that one episode is the only memory I have from the show.
I know it's from either season3 or 4 because I have S1&2 on dvd and it's not there.
So to answer the question, I probably wouldn't be here if L&C had bombed after the second season.
But if the show got syndicated then maybe I'll have some urge to check it out over the 'net just to know it's history.