Yes and no, Ssil... one of the complicating factors here is the fact that there are multiple things broken. Yet "fixing" one relative to something else that is currently broken, doesn't truly bring it to where it should be - it only slaps a bandaid on a current symptom. Group aggro and additional tank tricks need to be looked at almost simultaneously - not an easy task, for sure.
You can't really compare HZ to WOW, because then the temptation is to adopt snippets from WOW and apply them here, which would be like having a doctor treat a poodle. Yes, it might work in a pinch, but you really need a vet to do the diagnosis because it's a totally different beast.
I know you're going to disagree with me, but SA-like abilities are a perfect example of what HZ doesn't need: fast-recycle taunts. Yes, it does make hanging on to a pack of mobs more difficult but there are those who would say that, firstly, it should be more difficult, and additionally, once you implement something like that you can't rip it out without causing a player uproar - and once mob behavior is corrected, I honestly believe it won't be as necessary.
The devs need to take a slow, measured approach to these issues, as impatient as frustrated as we are. It's needed fixing for this long; I'd rather live with it for a while longer and not have to deal with the repercussions of a too-rapidly implemented "fix".
Edit: I'll start a new thread on this before we get scolded by a mod for thread derailment.