Hi Widow!

Thanks for the great feedback! I'll respond point-by-point.

If you are looking for more detailed feedback, after ~2 full games with this mod in singleplayer, here are my thoughts:
1. Maybe consider impementing mod that makes religious units require open borders treaty to enter other civ's lands? I'm not sure how this will affect multiplayer aspect, but it is really good limitation to AI's spam on higher difficulties, and IMO you should not be able to convert civs that have denounced you (as you cannot sign open borders pact with them). This mod is already present in workshop and works like a charm with your mod, but maybe you'll find a way to tweak this restriction to better suit your goals.

Interesting concept! I hadn't thought about this before. My gut says it would significantly hurt the viability of religious strategies since you would basically have to declare war for your missionaries to spread. As it is right now I feel that (in multiplayer) religion is close to par with domination and science victories, and that restriction would upset the balance. (this balance also assumes using the a la carte options marked with a +) I'll give it some more thought, though.

2. Due to huge number of available beliefs it is hard to distinguish "selfish" from "applies to all" ones. In Olympic pantheons you made quck indicators before the text for every pantheon, so it is easy to tell what it does without reading full descritpion over and over. Maybe we can get something similar for beliefs so I can be sure that particular bonuses will not apply to my enemy that follows the same religion

Yes, the belief list can be overwhelming at first. I did use icons to differentiate belief categories... the military ones have the crossed swords, the culture ones have the open book, etc.

My goal for all religious beliefs is to actually make them all "shareable" and NOT "selfish". I know from the point of view of a selfish civ leader that doesn't make sense, but from a game design perspective I think it adds a cool dynamic to the religious bonuses. Do I want to spread my religion to get a religious victory, or try to horde a bunch of bonuses for just my civ? (But even passive pressure from cities will eventually spread it...)

Compared to other great people, the prophets give you the best bonuses. And they're the most flexible because you can choose what you need. This is balanced by the downside that you have to share them with your enemies when they follow your religion. So the guy who does nothing with religion can still get a free ride with all the cool bonuses of his neighbor's religion. But, of course, the freeloader doesn't get to choose the religion's bonuses. The founder is going to select bonuses for his own strategies, but inherently creates competition in that space from his neighbors.

My favorite example here are the Crusade beliefs. We grant +6 combat in the borders of foreign cities that follow this religion. Well, as soon as I convert my neighbor to my religion, he can start using those combat bonuses in my territory against me!

Unfortunately, the mechanics of the SQL modifiers don't let me make them all shareable. For example, "Oktoberfest" was originally the pantheon "Goddess of the Harvest", and its modifier was created as a "founder belief" for only that purpose. I would love to have Oktoberfest apply only to cities that follow the religion, rather than apply to the founder of that belief, but I don't see a way to make that happen. Maybe there will be some future updates that make things like this more mod-able.

Kind regards,
DB