Religious buildings should be convert-able

[Michael Gladius]

In the DevDiary on religion, the developers mentioned that some buildings don't change when the religion of a province changes- namely, churches and mosques inside of towns/castles. This will result in stability problems and other forms of tension, but it'd be nice if there was a way to convert these as a deliberate (rather than automatic) effort. The Dome of the Rock and the Hagia Sophia are prime examples of churches converted into mosques, and many pagan shrines became churches in Europe.

[CroatianKnight]

I agree. There should be like an option "convert this building", could cost piety or money. 

[Lighthope]

I'm not so sure.  I like the idea of having some instability.

Perhaps if a building can be changed, there should be a very high cost so as to not make it a quick changeover.