At this point they should let the island sanctuary also function as instanced housing. Players can purchase homes and build up to the mansions on the island if they want. They can adjust prices so they equal housing wards. And the wards can then be used by free companies and social players that like the system. Short of opening a ton of extra wards to accommodate folks on each server this solves the issue. Especially if they allow you to give access to friends etc.
The apartments just are not anywhere as good as the plots. So much to collect for exterior as well as interior.