Wildstar could not be anything else than instanced plots, since what you can almost do anything you want. I personnaly created a small town in my plot there. You will never see this on FF XIV.
And i can't agree with you Naunet, instanced housing doesn't promote encounters. On wildstar, if you're lucky, you can meet they guy who made the incredible house you are visiting. But most of the time, plots are empty when you visit them.