[quote=@Brithwyr]
<Snipped quote by Ophidian>

Well, lol at the Papal States. For the longest time, they were the leaders of the biggest religion in Western Europe. If you want, it could be Autocephalous so more power is delegated to the individual nations
[/quote]

I'm extremely leery, as go-GM of allowing a player that kind of influence over, presumably, other PC and NPC nations. It seems quite abusable, regardless of the exact method, to be honest.