A suggestion for Graeco-Roman Paganism; In conjunction with the Sanitation bonus, an possible --% increase to cultural wealth?? like 10% or 20%? Graeco-Roman pagans were very philosophical in this regard xD

Great idea, gonna work on that soon.

SamuelCool: @fischer http://www.reasons.org/blogs/reflections/exploring-manichaeism-st.-augustine-part-3

Manichaeism was quickly successful and spread far through the Aramaic-Syriac speaking regions.[6] It thrived between the third and seventh centuries, and at its height was one of the most widespread religions in the world. Manichaean churches and scriptures existed as far east as China and as far west as the Roman Empire.[7] It was briefly the main rival to Christianity in the competition to replace classical paganism. SOURCE: WIKIPEDIA
https://en.wikipedia.org/wiki/Manichaeism#Later_movements_accused_of_.22Neo-Manichaeism.22

it is well known that Christiaity and Manichaeism were rival religions, you could do something with that. Maybe a minor penalty when christianity is present in a Manichaeism state.
Rival Religions - Up to -6 public order from pressence of Christianity.

@samuel cool, thank you for sharing this. I will try to update this mod as soon as I can.