I agree, I also think this would be a great way to offer more housing and make cities feel more alive and relevant even after it's no longer a current expansion city. They should put in buildings that can serve as apartments in all the major cities without housing districts like Old Sharlayan, Radz-at-Han, and Tuliyollal. What I want wouldn't require a full housing district, just an apartment building (maybe with a sizeable lobby room to act as a way to access apartment "wards").