Edward The Big:
In theory this mod can be used with any other mod, as there are no real rule changes except for the new UU's and the bgraphicalonly tag, which eliminates the extra 120 civilopedia entries. But this does not change the game dynamics fundamentally. You might run into some trouble if TheLopez's mod changes the same XML files (haven't seen it, so I don't know), but even if it does I'm sure you can still combine them.
Wyz_sub10:
Yeah, I had Joan as both originally until I just had to make a decision for one or the other in the first release. So she's a prophet right now, subject to change without notice.
Actually, I tried to avoid putting major secular or atheist figures in as prophets, as I thought this might cause some controversy among both religious and non-religious people; I figured religious people would object because of their non-religious and in some cases even strongly anti-religious status, and the non-religious people would object because it would bring up the old debate over whether atheism and secular humanism are bona fide religions. I'm not familiar with Charles Taylor (there was a Charles Taylor who was the Wright Brothers' mechanic, but I'm sure this is not the same one!).
With MLK, he's not really a prophet in the strict sense but you can at least make the argument that he was an ordained minister and campaigned for civil rights out of his Christian convictions, same with people like William Wilberforce, etc. Plus, due to the fact that prophets can build shrines, which spread religion... well, I just thought it best to restrict the category somewhat. But there are many philosophers, and not necessarily overtly religious ones, in the lists, especially in the Far Eastern civs where there is little or no distinction between philosophy and religion.
Most influential secular thinkers made contributions in other areas anyway, e.g. we could have Isaac Asimov as a scientist or artist, just as I have Blaise Pascal as a scientist. So generally you will find them in there, just not as prophets.
70 new civs in CIV Gold... Oh boy, over 2000 more names, minimum! That would certainly be a challenge, though it might create some problems as I have used, for instance, a few Austrians in my lists for Germany (and similarly for others too). Since your mod would need both, it would take time to check the entries and reorganize them, but it's doable. The real difficulty, as you say, is coming up with names for the lesser civs, but I like your pool list idea. Sort of like the "break it down by culture" option I read somewhere, though this would involve python work and as you know I am not very good at that. I am happy to compile mini-lists (I've done two already for Grave and Rhye), which have three or so names per category, but I presently don't have the time to find 20 names per type for each civ.