I've just broached the subject with the leadership but it's difficult. I still set aside BTC in my personal wallet for tithing so that when they are ready I can send to them

if you have any suggestions I'm open to it as well. i wrote an article on the reads section, I sent the leadership a version of that and why they should consider it. they dont have to convert their fiat to BTC, just be able to accept it in case someone in the congregation is willing to tithe in BTC.