If you have the Bastion of Defense talent, you're crit immune. There is no defense stat anymore.
Get as much stamina as possible. Then get parry, dodge, and mastery. If your expertise or hit are absolutely horrible, get some of that. You don't really need to cap those, just enough so you don't really notice misses having an effect on your threat gen. That's about it. Of course, with Cata dropping in 2 weeks, your gearing doesn't really matter, so I'd recommend just enjoying an alt in the new Azeroth for the next two weeks.
Kathy, I said, "I'm lost" though I knew she was sleeping
I'm empty and aching and I don't know why
Counting the cars on the New Jersey Turnpike
They've all gone to look for America