Arms/Prot Hybrid Spec - My Findings
Here's the spec: Talent Calculator - World of Warcraft
As one might guess, the main idea of this spec is to spam Revenge with Heroic Strike after Sundering up a mob and throwing on a Rend. With the Heroic Strike Glyphs (free after Revenge, and +10 rage if it crits), I didn't have any rage problems while tanking Heroic UP earlier tonight, and I was #2 in dps throughout the entire instance (averaged around 1350 dps, peaked on single mobs at around 1800 with nice strings of crits). The only problem I had was regarding AoE tanking, since the only real AoE threat move I had was Thunderclap. On large packs, I just rounded them up to one area and spammed Revenge, Cleave and Thunderclap, and I held them fine in most situations.
I just wanted to share my experience with this build, and to get some feedback on it. I'm thinking to throw on the Glyph of Cleaving (the 3.0.8 version, which makes Cleave hit 3 targest instead of 2) instead of the Glyph of Blocking for this build, since that would seriously assist with AoE tanking packs.
Any input on this would be greatly appreciated, as I hope to possibly develop this into some kind of coherent tanking spec (possibly for 10 mans when overgeared and helping out less-geared guildmates).
As you can see on my armory spreadsheet, my avoidance is pretty high (26.68 dodge and 18.28 parry) so with this build, I avoid/block incoming attacks (thus activating revenge) 61.5% of the time (60.3% against mobs that are level 82 [heroics], and 59.7% against lvl 83 mobs [raids]). As for the defense, I can throw on Repelling Charge - Item - World of Warcraft to get me well over the minimum for 10- and 25-man raids.
All-in-all, this seems to be a much more entertaining and interesting spec for going back and tanking for groups that are doing things that are below your current level of raiding. I'm using most ilvl 200 items with 5 or 6 (depending on the situation) ilvl 213 items, so I suppose this spec would be fine for tanking 10-man naxx once I had mostly ilvl 213 items, possibly even better than a normal prot build when there is no access to blessing of sanctuary.
Let me know what you think about it, I want to hear the opinions of somebody other than myself with this spec.