I decided I wanted to play a chill game so I started up a dynasty in Siberia and noticed one of them had a cross for the family house. Worked hard and ended up finally being able to become Nestorian (which had influence in Mongolia I've found). But the closest other ruler is way beyond diplomatic range. And after 300 years of solid Nestorian rule, I'm thinking that some level of diverge would begin (and wanting to play with the new feature), I thought founding a new church (Church of the North?) but honest can't think of what to change.

My goal isn't to be gamey, but I was thinking of blending in some Tengri (Mysticism) and allowing concubines. But since this is kind of fun, what would you suggest?