TheMarshmallowBear
Benelovent Chieftain of the Ursu Kingdom
I like to think they can pick a belief that was already chosen. That would both solve the issue you guys stated and improve the UA a bit - which is nice, since it's so risky.
Unforunately they won't because that type of advantage would've been immediately known from the description, they get to pick "one more belief than normal when founding religion"