Very beautiful mythology! And I only ever create cults and give nods to the occult. Sometimes I implement churches for stories but with Get Together I make clubs such as secret societies that have sinister aims.
For Legacies, I usually have them commemorate their ancestors and pay respects to them, very much found in Shintoism and Taoism. Some sims dress up in a sari and I have CC for Sims to wear a kurta, shalwar, dashiki, kimono etc.
However, religion is a blurry concept that I doesn't dominate Sims' lives. All participate in the holiday traditions in Seasons and it's all well in their world since no one squabbles over beliefs like in real life. For instance, my great great grandmother was East Indian and I still visit Divali (Sometimes spelled Diwali) festivals and enjoy lighting deyas although I'm not Hindu. I'm not Catholic but my Catholic friend and I visit beautiful cathedrals to look at art. My point is, Sims aren't religious at all but they can still appreciate religious aspects and that's enough.
