I'll add my $0.02
- You should incorporate the SettlerReligion mod into your mod
- Christianity should have a 100 spread rate. Christianity spread very quickly after it was discovered (like Islam did). Being this is a "late" religion in the game, it *should* over power the older faiths.
The way I see it, the newer faiths should overpower the older faiths by a small margin (nothing excessive). The advantage the older faiths have is that they're already established in the world, so they're influence is already spread out. The newer religions need a little bit of an edge to compensate.
- Buddihism, Zoro and Hinduism should have a slower spread rate. While Buddihism and Hinduism are two of the largest religions in the world (based off of population), they're not that "spread out" across the globe. Mainly they're concentrated in Asia (India, China, Japan, etc). Zoro is pretty much obsolete these days. The slower spread rate would represent this. Perhaps have some kind of health bonus for Hinduism and Buddihism to simulate rapid population growth?
Of course the newer faiths (Christianity and Islam) should have the faster spread rates, as their influence is spread all across the globe.
- Here are som suggestions for the tech tree. It could go like this:
-- Mysticism leads to (Priesthood, Monothiesm and Polythiesm).
-- (Monothiesm OR Polythiesm) leads to Meditation
-- (Monothiesm OR Polythiesm) and Priesthood leads to Monarchy
-- The religions could stick with the vanilla Civ4 techs