I am super in agreement here. The religion game needs a boost.
4) Religion in general should be easier to join. I think having a page where you can just select and join one of the established religions would be nice instead of hunting down a temple to do so.
Very much agree. This will help spread religion across the islands easier. Perhaps it could cost an extra like 10 gold if you aren't at a Temple, for your character to send away for pamphlets and texts?
