Would Bards and Machinists make good use of Diversion?

[HyoMinPark]

Quelling strikes rarely worked as good as just having my enmity cut in half does now. So no I don't want to give up an enmity dump for something that doesn't work as well.

The original Quelling Strikes wasn’t a 90% reduction in personal enmity for 30 seconds like Diversion is. If 90% reduction in your enmity isn’t enough to keep you from ripping aggro, then the problem lies with the main tank—whatever they are doing, it’s not enough to keep the boss on them even after the DPS have quelled their aggro.

As a main mch, I don't feel like I need a diversion. Yes when my opener wlidfire explode I'll be second with ennemity. Let's proc tacticien, others aren't supposed to die.
On refresh, I still don't care about this, I proc this after second wlidfire no matter what. And then I'll repeat it as an enemity cut after each WF. Meaning it's on precise timer so heals adapts their mana reg. Stop thinking those are support skills and have to be held. Using them to lower your enemity will also give the bonus to your mates so they'll proc their regen later.
Diversion is nice, I still don't need one more oGCD when preparing my burst.

No, people aren’t supposed to die...outside of progression. If you’re in the midst of prog, you shouldn’t have to blow your resource refreshers to save your own skin, because people are going to die during progression; healers are going to have to Raise them, and their MP is going to take a beating for it. But, if you’ve already popped Refresh to save yourself from ripping hate, well, sucks for those healers until Lucid Dreaming is off cooldown, I guess.

I object to the fact that BRD/MCH has to blow a support resource to dump their aggro, where as every other DPS has the option not to (Diversion over Lucid Dreaming for casters; melee have Diversion, and some melee jobs have other tools to manage hate, such as a DRG’s Elusive Jump). And, I don’t know about MCH, but I can rotate both Refresh and Tactician and still creep back up to 2nd in aggro when I’m playing BRD. BRD bursts basically every 80 seconds with Minuet + Raging Strikes (plus Barrage during that timeframe). Diversion, which quells your aggro by 90% for 30 seconds, would take care of all those issues, and I won’t have to blow a support resource for my aggro.