Ho yes, I always take major aggro skill cd ready for healer in case he gets aggro. The issue was just with some dps, healer never got aggro even when I am using the most basics of rotation, just pull and a couple of flash, then a flash every 2 or 3 skills.

On a side note, I am now levelling the lancer and never got aggro, even with the most bad tank I were with. I just take a look on aggro warnings and change mob if mine does go red zone, and finish job when he turns green again. My own opinion is that a bad tank makes things just a little slower, but taking aggro is mainly dps careless, ignoring aggro warnings.