The demolish timers should come back, so when content slows down- you'll start seeing alot of places open back up
But since SE is small indie company, no money & PS4 limitations, we probably won't see instanced housing ever because the time it would take to recode everything for that means they couldn't work on their precious blue mage or more crafting quests or add more terribly designed mullets rather than just bite the bullet & listen to the player base