Well, I'm just now sitting down to hammer out my mod, using CCCP as a base. Of course, with all these new options, everything has to be rebuilt from the ground up, then balanced (which I hadn't done before because of my food limit issue). I'd be happy to put some work in on documenting the changes, although I'm not entirely sure what sort of format to put it in....
@Elucidus -- It's easy enough to turn the text on for the first two of those three. The first is Great People Point Pooling, and the second is Slow Cultural Borders. Just add:
to the end of the Civ4GameOptions.xml file (well, near the end... the last two llines should stay as the last two lines).
Now, what's the third checkbox for? I'm about to see if I can find it (actually, that's why I came back here again), and thus find out how to add things to that list, but it would be nice to know what I'm looking for if it isn't all in the same place.
[EDIT]
Well, that was insanely easy. I must be grokking this stuff a bit better now. The third checkbox is GAMEOPTION_EXPANDED_CITY_WORK_RADIUS, and it hasn't been incorporated into the game yet. I'll see if I can't get it working, as I have the files from another modcomp that does just that.