I'm not all that great actually as a tank. Only thing I've tanked is heroics, i'm usually OT in Kara, never tried anything harder. I think I want Improved Bloodrage, for the instant SS, and my hit rating is too low IMO. Anyway, suggest away!
Most people would say upgrade this and that. I know that isn't the easiest thing to do.
Stick around in Kara long enough and you'll get upgrades to your gloves, waist, and pants.
The only advice that I have that others may not, is to pick up a throwing weapon (even a green from the AH). It's much easier to pull when you only have to wait ~1.7 seconds instead of 2.7. Plus, you don't need to carry bullets or arrows.
I'll have to find one then, or use Felsteel Whisper Knives.
I know Kara upgrades will be:
Bracers, Gloves, Legs, BP, Boots
I'll have the Arena Shield next week. I know most of my gear is fine for Pre-Kara. I'm wondering also... Stam Trinkets or Defense Trinkets? Or both depending on fight? (can you give examples of which fights you want more avoidance and which you want more life?)