Bladed armor > 2H spec. Swap the points there.
Drop ravenous dead, put that into Bladed Armor. Bladed armor has an increased value for a tank since it is affected by Frost Presence.
You'll need to find a place for Lichborne, as it's an excellent "oh shit" button.
Other than that, the spec looks OK. I think as-is, it's a bit short on threat (no BotN, subversion), but worry about surviving first, then adjust spec/glyphs for threat.
Also, what do you mean by rune procing? Are you referring to the Sigil?
Luck is what happens when preparation meets opportunity. -Seneca
Everyone marvels at a square egg, but only the chicken understands the PAIN.