I want more choice what to do with religions, and by "more choice" I don't mean "more bonuses to choose from", but more fundamental stuff changing the nature of how different religions work
For starters, it is bizarre how in civ5-6 the modern era arrives and religion works exactly the same way as in the medieval era. Maybe that's because devs come from America, abnormally religious for a modern western state, but there are many countries in 2020 already in which religion is basically irrelevant both politically and socially. I want the ability to play as a secular state with no official religion, which is tolerant towards many religions and disables their state benefits for some other (powerful) stuff. I want the ability to play as an officially atheist state. With my state ideology being able to replace or even persecute actual religions, or even work analogically to them; many people have pointed at the similarity of hardcore communist ideologies to religious zeal... I'm not sure if state atheism should require communist ideology or not.
Also, it is bizarre how all religions in civ6 are essentially different flavours of Islam (yes, Islam, not even Christianity). All religions in civ6:
- Are universal religions which have the idea of "conversion" and "missionaries", and the goal to convert the entire world. Well, the only major religions in history which actually had these concepts were Christianity, Islam, Buddhism and Manichaeism. I want the ability to play as religions which have no "missionaries" and universal aspirations (think of Hinduism, Confucianism etc) and instead spread only through culture and trade, and get other fundamental benefits. I also want the ability to play as ethnic religions such as Judaism, Sikhism etc.
- All religions in civ6 are founded by prophets who radically break with prior pantheons. I want the ability to play as religions which don't require prophets and steadily evolve from basic pantheons - such as Hinduism, Greek religion etc.
- All religions in civ6 are essentially suspicious/hostile towards other religions, with no benefits of any kind from coexistence. I want thea bility to play as syncretic and tolerant religions and some incentive to tolerate other faiths and have multireligious society. Think of Roman empire and ancient Middle East, parts of modern world, huge part of history of India and China (Hinduism and Buddhism often blended into each other for example) etc.
- I want to be able to found and support multiple religions in one playthrough, yes also in the same time. This is what Indian and Chinese civilizations did after all.
Also, some other stuff which would be nice:
- The ability to set an official attitude towards specific other religions, with severe internal and diplomatic consequences, advantages and disadvantages
- Church mechanic for some religions, slightly separating the religion from the state, with advantages and disadvantages
- Holy wars if there are multiple civs of the same religion: the target city is chosen, and they all race to take it
- Spontaneous heresies and reformations sometimes spawning, creating problems and opportunities
- Religions with or without monastic orders, with or without a separate priest class
- Religions which support vegetarianism, higher yields from vegetarian resources, lower from meat (like Hinduism)
- All citizens of the world always having some sort of religion, because it always feels so weird when you have "no religion" pops in early eras; for example, all pops at start follow "animism", then "pantheism x", then "religion z", and only since industrial era they can have "no religion" (as only then did open lack of faith start manifesting at a large scale, outside small elite circles)
A lot of this proposed stuff contradicts with the concept of religious victory, and that's wonderful, because it should never come back - it makes completely no sense, it is boring, and honestly, in the contest between "deeper religions which seem more realistic" and "arcade religions to fit victory condition" I think the former should always win