Again, I feel a design flaw from previous Civs is present here. When you place a new city at turn 800, it has to go through all the development of infrastructure, which by then is like 100 buildings, sorted poorly. Newer buildings should overwrite older buildings so when you build a monument at turn 1, a temple at turn 100, a museum at turn 500, etc. you're good. Have cities auto-start with old buildings when you reach the ability to build something two steps along that chain.
This with the trade management makes the late game incredibly TEDIOUS. As you evolve from settler to state to empire, little shit should fall away as you face more significant challenges to your society.