Thought I'd try building a city with distinct, walled-off zones for different levels of housing - slums, a middle class in residences, and elite in manors.
Most industrial and service buildings have also been built in a particular zone - e.g. all the bazaars and physicians are in the middle class area, all the farms are with the slums etc. Long walks are used extensively to provide services to other areas.
Originally I wanted to use walls to separate the zones - but I didn't check to see if Meidum actually has walls as an option. (It doesn't). So there are statues instead.
Save file is 3 years before victory, you shouldn't have to do anything except send requests.