Okay, Here comes the Small Time Modder's opionon on all this. I personally think you should use a mod, not any of that oscolatiing war or whatever. Anyway, on Mods I would use either Rhye's of Civilization, since it is relatively small and very fast loading, or The Goldflash Altered Tech Tree Mod, since I am such a horrible person and must shamelessly self promote myself everywhere. Er! What I meant to say is that it provides a number of intresting options.
Actually, there are some Issues with using the GATTAM, it isn't perfect yet; needs some tweaks, and it is only for C3C.
And ehre is another problem,, I know I'm sorta beating a dead horse but I think that the version shiould have been decided on in a vote by all the citizens, not just the leaders.
Which Brings up another Point... Why can't we have TWO or even MORE Demogames? A Vanilla version, a C3C version, a DyP Version, a GATTAM Version or what not?
I've hope I've helped and not just irritated you all.