Why wouldn’t auto-conversions be dangerous/over-powered? There were posts in this thread over in AoE2:DE land which raised good points againts auto-conversion toggle, imo. Worth taking a look…
It has been a while since I played AoE1, but it seems like priests/monks there behaved pretty much like AoE2’s. And if that’s true, then I think auto-conversions would be quite overpowered