I must admit I felt slightly cheated when I read the parts from yesterday. It's not like I didn't like reading about LnC working on their new home or going shopping, but somehow I missed getting the answers to the many questions. I still don't have them, at least not all of them, but we're getting there, I'm sure. At least I know now how Joe and Lana take the news.
You're scaring me, though. What do you mean with this:
As I mentioned in fdk, there is one MAJOR difference in this Clark's history that hasn't been explored yet. It's been hinted at [small hints, granted], but so far no one's caught any of them [but I wouldn't really have expected it either]. There will be a couple bigger ones before the difference is revealed, but I doubt anyone will guess what it is, even then.
Of course, there is the fact that this Clark already knows he's an alien (unlike the Russian-experiment hypothesis from the show), but somehow I doubt that this is what you're referring to. Still, the question remains: How does he know?
The other idea that I got into my head is clearly unthinkable, but it fits with your expectation that nobody will guess what it is. I just hope you didn't make Lana be Clark's soulmate for real.
Another thing that got me really worried was Andreia's FDK. She's right with her analysis of Clark's brain being out of order while he's with Lana, that's for sure. And I can so imagine her trying to make things difficult for Lois and Clark, it just seems to be in her nature. And what about her obvious attempt to get Clark into bed (or wherever, I doubt she'd be choosy about the actual place it takes place)? She didn't hope to get pregnant so Clark would have to marry her and divorce Lois, did she?
By the way, I couldn't resist and used a due-date calculator on Lois' case. According to it, her last period must have started on October 20th, and if the child was sired on October 31st - wouldn't that be a little early in the cycle? On the other hand, these little critters do have a certain life expectancy of up to a week. Of course, that means Clark is definitely not the father - unless the child develops super-fast.

We'll see about that, though.
Another thing I'm wondering about: Doesn't Clark have the tendency to float in his sleep? Shouldn't Lois notice sooner or later? And when will Superman enter the picture?
/me is off to re-read some stuff to find more clues about Clark's past (Maybe I'll even start a list...)