i got a question for you dps..

[KleeneOnigiri]

When do they take aggro from you? At mobs or at a boss?

For dragoons, losing enmity means using elusive jump, which means jumping backwards. Depending where you are, jumping backwards might be worse than tanking the aggro for a bit. Since behind you could be more mobs, aoes attacks, a cliff etc.
But yea, DPS should watch their aggro.

[Transfinite]

That's fine and dandy for all the rest u DPS out that have access Quelling Strikes, us Monks despite being Top DPS on group parses DO NOT have access to Archer Cross Class abilities nor have an enmity reducing ability like Elusive jump or the Emnity redirecting skills of a Ninja. We would LOVE to have QS as a ability, but instead we're stuck with Foresight, Skull Sunder, Fracture, Bloodbath, and Mercy Stroke.