3 turns of culture and 1,000 gold is a low reward?
I think defender of the faith should just lose a yield already. It frequently comes up as better than the other choices just for that sweet faith and culture.
I think sacred sites is fine. The tourism on wonders is the biggest factor, not the faith buildings. When combined with goddess of beauty, you have a huge incentive to hoard wonders, and it can be very potent if you’ve managed to maintain a competitive tech position (council of elders can be huge for that).
This was an issue that was raised before, I'm pretty sure you automatically gain an artifact if a GPTI is on an Antiquity Site when you research Archaeology, not 100% sure though.Hmm. I wasn't aware of this.
While we're talking about reformation beliefs, I agree with @LifeOfBrian that Faith of the Masses is a little too strong right now. I think the amphitheater bonus and the ability to buy amphitheatres should be dropped, it's only fair since Jesuit Education doesn't give the ability to buy Libraries, and the Amphitheatre bonus means an easy +5 in every city, more if you have applicable Luxuries (this building/belief is ridiculous with Lapis Lazuli), and Faith of the Masses has a better secondary effect anyway.