I'm with Tom in that I think religion in BM should more often serve as a flashpoint for conflict and disputes, as it did in the Middle Ages and generally everywhere humans go. Conflict over material and land often miraculously finds justification in God, err, Bloodstars. People would often join the Catholic Church just to gain political leverage, as I'm sure a large number of Dwilight nobles have done, and use said leverage to hammer on the political competition.
I think a huge fight between the northern theocracies over some minor doctrinal point would be amazing fun and fit the bill for religion. All this peaceful cooperation is kinda unrealistic.
