So 4.2 has been out for a week now and we've all had ample opportunities to run dungeons since then.
I must say I almost forgot about the change to CC until I was reminded of it.
So, what's your personal verdict on the changes to mob-aggro when being crowd controlled? Do you feel it was a good change? Does it relocate a little responsibility away from the tanks towards the DPS? Did you even notice it?
Personally I hardly noticed the difference simply for the lack of CC I tend to use. I can imagine it makes tanking a little more accessible so I guess it was a good thing after all.