Here is World of Warcraft's user interface, completely redone so that it looks more futuristic. It's damn cool.
Granted, having this "hologram" style displayed here by valkyrie s may not always be the most useful in battle, but still! I can already see this on the Oculus Rift.
If you're curious as to how this changes things, or what is displayed where in this set up... here's a screenshot that lays it all out. Click on the magnifying glass in the top left:
Part of it is in Chinese, because this was created by a Chinese player. If you'd like to check out how it was done, or what to use to get this effect, you'll want to go here.