Maybe in this game churches different, but real life, church never make noble into common person.
Church can make excommunications, yes.
Real life, I think never happened so not possible make sure, but probably all nobles rebel against church trying to take away such a thing. real life more practical than people think; multiple Popes, self helping Crusades, war against other parts of church
Real life, nobles let church make one noble into common person, maybe they be next? Never let this happen. This story not realistic.
Noble excommunicated can pay indulgences, all okay again. Noble no more noble? What they do? Noble is blood; not possible take away. Everyone know this; no one even have though "now you not noble". Not even possible for thinking.
Maybe people being confused, "not noble" vs. "no more title"? Titles can take away, very common. Nobility, no.
If okay make game like this, also maybe okay outer space monsters come visit, make new realm.
