After previous update, the system won't register any characters in region for religion. Well, at least not for any greek culture, it does count them for other cultures like paganism. This is since the update with the populares/optimates split.

I have also noticed that the color of my diplomats changed to the same color as the optimates (I play with Syracuse), don't know what happened there.

Just letting you know what I encountered. Do love the fact that you are still working on this mod, have been absolutely loving it!