To keep things short, blizzard is afraid of buffing affliction because of the way agony and corruption work, they are single target abilities but not really, as in fights with spread cleave, if affliction is tuned correctly for single target, that means it’s two or three times as good as melee classes, and that’s exactly why blizzard is very careful with tuning affliction single target.
Isolated Torment:
- If Unstable Affliction, Agony and Corruption are only affecting one target, their damage is increased by 30% (numbers can change)
This will allow affliction to have dots tuned for multitarget, and still do respectable single target at the same time.