I’m starting to think that once 1.4 is released, I might make a 1.5 a smaller-scale update focusing a bit more on balancing and changing up the UHVs, and possibly UPs for current civs which I don’t think are fully balanced or dynamic enough (Judah, Jerusalem, Nubia immediately come to mind, and some others could use some work like Mamluks, too.) I could also add some more buildings and possibly techs for the classical-medieval era. I’m also thinking some new UUs could add some more fun, even if outside the UHV timescales, and some modern era leaders for civs like Korea, Cambodia, etc could probably add a bit more.
Beyond that, there’s plenty more I want to add. My scope for adding civs is pretty relentless, so I can see space for just about any region to get some new civs (except Middle East, and Africa, following 1.4, though even in the Middle East I feel like there’s a good case for adding a Turkoman civ, as well as modern Iraq, and maybe even the Ilkhanate???) Anyways, I’ll probably put up another poll and see what you guys favour.