Something I'd like to see in Civ6 is religious priorities rather than just preferred religion--after all, quite a few civs have other religions that would also make sense if their top choice is taken. For example, Persia might prefer Zoroastrianism first, but Eastern Orthodoxy and Islam would also make sense. India might prefer Hinduism, but Sikhism and Buddhism would also make sense. England might prefer Protestantism but Catholicism would also make sense. This obviously doesn't apply to every civ, but it would be nice. If different leaders do happen, it could also be interesting to switch up their priorities--Gandhi prefers Hinduism, but Ashoka prefers Buddhism; Victoria prefers Protestantism, but Alfred the Great prefers Catholicism. I also feel like there ought to be a more elegant solution than assigning modern religions to ancient civs--it never quite feels right that Ramesses founds Islam or Hiawatha or Shaka found Protestantism, for example. (Although with Hiawatha you can at least gloss it as the Longhouse Religion, an indigenous Iroquois Protestant denomination--sort of.) Since there seems to be an assortment of generic symbols, I'd actually prefer they used those.