Quote Originally Posted by Penthea View Post
The short answer is server strain. They would have to change things about how data is stored and accessed to facilitate proper instanced housing. I'm sure it is more than that. It obviously would cost time and money to create this content and I suppose SE would rather pump those resources into other content instead.

SE are able to create instanced housing. Whether they want to or not is another thing altogether.
Server strain is the reason they can't easily add lots of new wards to the existing housing areas.

The main reason against instanced housing (other than the possibility of the developers simply not liking the idea) is that it would take a lot of work to make it happen - work which they would prefer to spend on other things.