Emergency Tactics is great, but...

[AxiomPITCH]

Can't you pop ET for use before you actually need to heal? As in use it between broil spams or, even better, after a dot refresh. Keep dpsing until you need to heal. Not only is it already on you so you don't have to waste time waiting on the animation, but it's already recharging cooldown because you had the foresight to prep it. Win win.

But at that point why wouldn't you mitigate the incoming damage that you popped ET for to begin with? It's weird that you have to create a use for ET instead of the game doing it for you. It does need a change. If you crit the ET with adloquium, it's almost entirely too much healing. It's an awkward ability but at the same time it's pivotal for the SCH to be able to reliably heal a high raid wide damage phase, without a stack for Indomitability the SCH will fall very short, or more accurately just on the threshold of not enough healing.