Maybe I'm alone in this boat, but having tanked on a Warrior, Paladin and Death Knight, I kinda feel like the Druid is lacking something in terms of AOE threat control. I remember Druids used to be king of AOE with their Swipe and whatnot, but I somewhat miss this AOE effect I can lay out which just ticks in threat on my aggro account. Death & Decay and Consecration, to be exact.
On packs I usually rush in, hope the DPS will lay off the AOE for a while (or I'll have to skip Demo Roar) and spam Swipe + Maul till my fingers bleed. If anyone focuses on a target that isn't my primary target, they pull aggro easily. I compared my Druid to my Death Knight in a regular ToC today and I noticed that my Druid actually creates more threat than my Death Knight. I was above 200k threat on The Black Knight in Phase 3 where my Death Knight never went above 150k or so. Still, I had major issues holding aggro on the trash pulls before the Confessor.
Granted, I was playing with a T8 Arms Warrior and Survival Hunter who didn't use Misdirection, but still. What I'm looking for is some kind of rotation or priority system when dealing with packs. At the moment I actually skip Demo Roar to spam Swipe, because people have a very short fuse when it comes to AOE. If that Warrior pops Bladestorm, though, I'm lost.