Long answer short, go to any server, and inspect all the wards... most of those wards mostly is Ghost Cities anyway, most of these houses is not even used, I say reduce the demo timer to 15 days from 45 days, that way you need to keep subscribed to keep a house.

For the waiting system now, it is excelent, before that you could do real estate and it was a method for farmers to gain credits illegal, also it is illegal to sell a plot for more than what it is worth.