After my
post on the Egyptian Pagan URV, I thought some more about pagan temples and the interaction between paganism and major religions.
The current design feels unsatisfactory to me. When a major religion (except Judaism) spreads to a city with a pagan temple, the temple disappears automatically. If the city was building a pagan temple, construction gets halted. Since there is no way to prevent the spread or remove a major religion from a city in the early game, it basically means that a city can, outside of any control by the player, forever lose its pagan status and any benefits of a pagan temple. The player also loses any production invested in the construction of temples (whether completed or not). From a gameplay perspective, this waste of hammers is annoying. It also disincentives building these temples, especially when you know a religion is likely to spread soon (e.g. in early China). The fact that pagan temples can be repurposed into temples of the new religion is neat — but it requires previous conversion to that religion, and therefore at least one city with the religion, and therefore losing the pagan temple in that city if there is one.
I also don't think this mechanic very realistic. For instance, Christianity took about three centuries to replace polytheism in the Roman empire. During that time, there were Christian minorities in major cities, but the official Greco-Roman religion was still prevalent and there were still pagan temples all over the Roman world. In East Asia, the "pagan temples" (ancestor shrines, Shinto shrines, etc.) still coexist with Buddhism and Confucianism and Taoism.
My suggestion is thus that major religions do not destroy pagan temples at spread. Rather, I suggest that the following happens
when the civ converts to a major religion:
- Pagan temples in cities with the new religion get repurposed into temples of the new religion.
- If a city has both a new religion temple and a pagan temple, the pagan temple is destroyed.
- Pagan temples in cities without the religion are destroyed (abstractly, because of the loss of state support for the old pagan religion).
This creates an incentive to wait until a religion spreads across a civilization before converting to it. I think this would be an improvement in realism: it makes little sense that a large polytheistic civilization converts to Christianity immediately after that religion appears in a small city on the fringes of the empire. The unhappiness caused by the new religion before conversion still provides an incentive to convert eventually — you could offset it by building a church or pagoda, but then you'd lose the free repurposing when you do actually convert!
Also, these rules would remove the need for a specific exception for Judaism (so, more elegance!).
In closing, I reiterate that I think pagan temples should have a priest slot.