I actually never thought about that. I'll look into making it compatible with that mod

Will this ever be compatible with Fire Emblem True Start Location?

going to be honest i have some mixed feelings about the writing, the Claude and Dimitri interacts are fine but the one with Edelgard at the start feels a bit... overly hostile. Even assuming Silver Snow, I got the impression that while left unsaid Byleth wishes things had turned out differently. Admittedly I also think that particular mod makes Edelgard's AI a bit to one note but that is a separate matter. Still i think you overall did a decent job.

It was adjacent. I ended up making a holy site which led to a Pantheon. I will try again another time. I am 225 turns into the current game.

Did you make sure The Enlightened One was in your city? If you're just seeing Holy Site and Citadel, it's not in the city. You can only found a religion when the unit is in the city, and The Enlightened One spawns on a tile adjacent to the city

I got the General before the Pantheon, but it would not let me found a religion. I had a choice between Holy Site and Citadel.

This is a very fun idea

It would seem that the Enlightened One could generate a religion before a pantheon if the great general from the Honor Tree was selected. I will give it a try.