This is the spec I've been running in dungeons
I run it as follows
Thunderclap > Shockwave > Revenge, Rend, Cleave depending on procs/rage> Thunderclap > Shield Slam w/ Shield Block/Cleave/ Revenge(if available) > stacking Thunderstruck to 2 or 3 (based on need) while tab targeting Devastates, Shield Slams and Revenges to hold mobs that are low on threat, weave Shockwaves as Thunderstruck hits 2 or three and repeat til mobs are dead.
I also like Gag Order for add tanking for the shorter CD and silence on casters to bring em in. I use Glyph of Shockwave because of the value of the stuns. Most of these add fights are over pretty quickly, and your AoE stun helps to position and hold adds that may be pulling off
It seems complicated at first, but as I developed the rhythm, it got pretty simple. The biggest issue was "overzealous" DPS AoE-ing. Basically, our AoE threat requires a build up, rather then the snap most people are used to from pre-patch.
The one concern I had was when unexpected adds came in. i.e. in the tunnel after Volkan in HoL. Someone got feared and caused the next wave to spawn, and the most I could do, while TC and SW were on CD, was to use my AoE taunt and tab attack.
Overall, it was pretty good. I used it for LDW adds and it was great as well. In heroics, I would sometimes lose mobs to 6k+ GS DK's, mages and Boomkins, but it wasn't any worse than before the patch with plenty of classes. I did also say something at the beginning of my dungeons to the effect of "My threat is a little jinky, so I need 5 secs or so to build threat." Most everyone obliged consistently. Actually, the people I knew from guild were worse about it than people I would get in randoms
TL;DR is develop a rotation, rather than Priority queue, for maximizing AoE TPS.
BTW, I use my other build for boss tanking, and TPS and DPS is just fantastic. 43k Shield Slam ftw. Boss tanking is really no different than it was before, just be mindful of not always keeping HS on cooldown to build a little rage at times.
Squirrel, your pants are weak.