This map would allow the maximum 255+ in MGE and in ToT (if converted), you can get 700 cities in large mass regions if terraforming the tundra and glaciers, then have 100 cities in smaller but strategically important islands. Therefore a total of 800 based upon my testing.
The AI will still try to use up every little square of land since it is meticulous and will often build cities too close, but players can be more discriminating in city placement even denying land resources on purpose by such strategic planning.
