I am a little bit confused about haste thresholds and what it means. I understand that you must gain a certain amount of haste to gain an extra tick of a dot. The thing I don't understand is that surely that makes haste useless during haste thresholds other than reducing cast time, surely crit and mastery would outscale them at this point.
So the way I would see it - at 30% haste you then go crit and mastery and just maintain that 30%.
Am I misunderstanding something here or is this correct?