First priority: Cutting down use in Almas Thirr and Hlan Oek 
Second priority: Cutting down use in mainland on the whole 

Using this as a guide: Generally held by either temple buildings (eg 1 in a temple); in the private collection of particularly pious nobles and higher ranked temple priests

Importance for release:
First priority would be nice. *Shouldn't block release.*
Second priority is less important, but should be actioned at some point for consistency.