Give it a 2 year patch campaign to make housing inhibited by a lottery system that no one can buy.
Stick some of the coolest mounts behind a grind that most people hate.
Ruin the lifeskill market by making it too easy for people to craft and gather.

Don't forget to make the zone all that grey, wait sorry pink rock that is all around the Gyr Abania zones.
Everyone would love that, and it's never been done before.