Indirik, that's kinda my point. Adgharianism and Blood Star worship are profoundly alien to each other and oddly enough it's common ground which tends to cause dissent.
It's not odd at all. Competition for limited resources brings conflict.
Any two IG religions necessarily consume the same resources: Peasants and nobles. Since each peasant and each noble can only follow a single religion, that means that all religions are necessarily mutually exclusive. It's not like you can follow SA to fill your "astrology slot" and Adgharhinism to fill your "god slot", etc. You either follow SA or you follow Adgharhinism.
The most any religion could expect to get out of SA would be some vague admission that they are some kind of strange variant of the worship of the Bloodstars. If you're not that, then SA doesn't really care about you. In fact, the more different you are, and less common ground we have, the less we care to have any dealings with you at all.
We, so far, have not been interested in any kind of "strategic partnership" or shared occupation of territory. The very concept of such a thing, when it comes to religion, is really rather odd anyway.
