Actually, they'd said in 2.3 (I think it was) that they changed it such that NPCs won't go for non-feared people but will stick with their threat, and as a tank that got feared while others didn't, I watched this particular boss stay on me. It was very relieving, and makes stuns/fears not quite so deadly.

Amen to that, I do the same thing in my build. When a mob is close to dropping, if I'm lucky enough to have 5cp and 5 deadly poison charges, a last-second envenom crits easily for 3k or more. That little 1 point in vile poisons adds up, especially on the odd boss that is vulnerable to them for even more sustained damage over time.

I did a heroic SP the other day, and several times, on different mobs, the mob would fear the group and then chase me (a rogue) instead of the tank. Because I was being feared, I had no choice but to take 4k melee attacks, and of course I didn't last very long. I don't know if it was a bug or by design, but the mobs always followed me instead of the tank regardless of my threat.

Yeah, it also makes tanking Summoner in Gruul's lair MUCH harder... ah well, we've never wiped because me and my team-mate couldn't control him. We just have to work at it now.

@11

Intimidating shout effects still work like old fear affects; the tank is "cowering in fear" instead of properly feared, and apparently mobs still de-aggro in this case. More usual fear/horror affects still cause the tank to retain aggro (fear for sure, pretty sure on horror as well).

So on those guys (when tanking) I use however long berserker rage gives me, load up on threat, and then hamstring/kite the mob unless there's a tremor totem or fear ward available. You can out-range intimidating shout and the mob will still try to cast it on you if your'e out of range, preventing your poor rogues from getting turned into goo.

If the tank gets hit by intimidating shout and you have evasion, good time for it :).