It would be wonderful to adjust the rate at which technology is researched, stars are earned, and how many stars per era there are. I do use the True Endless MOD however, there are certain aspects of that MOD I believe take it too far. My idea would be to have a "Custom Pace" in the setup menu that would allow you to adjust the multipliers for the above-mentioned points. A good example of this is a MOD that Civilization 6 has called "Take Your Time Ultimate"; https://steamcommunity.com/sharedfiles/filedetails/?id=2176927489.