Quote Originally Posted by QuantumFX View Post
I can't answer for Unyielding Sentinel, and there's some tests that I'd like to try in a quest with perma dungeon alert, or the mobs stacked on top of each other in a 3D space*, but it seems to be: so long as nothing is trying to attack you, you get the full heal. My test for this is watching the procs for Sustaining Song, and Holy Presence.

*Think the Yugoloth favor Amrath quests.
Yep it seems whoever is at the top of the threat list is considered "in combat" everyone else is fine. So this change effectively neuters needing healers at all.