There is ofcourse also the option of keeping several different types of wards.
Another option would be to have a ward with instanced houses where the outside is static but beautiful and would be treated similar to apartments. But when you go outside you would find yourself in some sort of park in the middle shared by everyone in the ward (with NPC's, market board & seating and maybe a fountain and some bushes/trees to top it off). That way more people can use the same ward with less effort for SE when it comes down to designing a new ward.