Yeah that would be good, that fixes the complexity in control that spirals once your civ blobs. Keeping it simple and streamlined across the entire playthrough is important.
I think it would be fun to maybe not even be entirely aligned with one country and act as some sort of third party that can impact the growth or decline of other empires. So the AI is still playing the 4x around you but you're not locked into a given team.
This might allow you to pick and choose some of the fun parts (e.g. exploring for a given civ at the start of the game, or picking a expansion spot for their second city) while sidelining the less fun parts.
I think it would be fun to maybe not even be entirely aligned with one country and act as some sort of third party that can impact the growth or decline of other empires. So the AI is still playing the 4x around you but you're not locked into a given team.
This might allow you to pick and choose some of the fun parts (e.g. exploring for a given civ at the start of the game, or picking a expansion spot for their second city) while sidelining the less fun parts.