Well, just a couple of questions at the moment...

1) How modifiable are religions? I mean, I'm aware that it is possible to relogo and rename Catholicism, Orthodoxy, Islam and Paganism - but what about Judaism and Heretical Cults? Can they be used at all? I'd assume that this is possible, but any factions that use relogoed and renamed versions of those two religions would have to use building and unit review panel graphics, for example, from the Catholic, Orthodox, Islam and Pagan folders - or something like that?

2) With this mod, I'd like to expand the map southwards (on a possible, not certain yet) and eastwards (to the Caspian Sea) to an extent - what would be the limitations on this?

I'm sure I can think of more questions, but those two are the most important at this point.