Instanced housing I suspect will have the same issues that Island Sanctuary suffers from. Now for the simple minded people lurking here, I'm not against instanced housing, I just doubt its effectiveness in stopping illicit house sales, and MHO. It's pretty obvious that Square isn't taking any feedback on this issue, and if I had to speculate, I'd say their answer to these problems will likely be to add more medium/large plots to future housing zones. Will it solve any problems? Probably not.

The easiest thing that Square can do, right now, is have GM's lurking around on house selling discord servers, and websites, and start demolishing, and banning left and right. Sellers get banned, Buyers get banned, house gets demolished. As far as multi home owners go, Have fun paying for all of those accounts.