Healers anyway have only a few sets, and one our staples, SPC, is now gone. Not much left but situational sets and Recovery Convergence. Recovery Convergence has this annoying thing that its synergy has lower priority than every other synergy. And it takes a GCD to get back. I don't want to load a synergy priority addon just for this one synergy.
When you try to position yourself to maximise the people you give the resources, if you come into range of any other synergy, anyone uses a skill that gives synergy, or if you even look at an taunted enemy where you get a synergy, all of those always go on top.
Except, of course, the spears in Cloudrest, because of course I want to pop the Recovery Convergence and not drop the spear when I am in Narnia alone.
And since there are bugs in the game, that gives extra difficulty. In Sanity's Edge, second boss my Recovery Convergence was effectively unusable because of the bug. Had Healing Combustion prompt on all the time. Could not use any other synergies, could not even answer a ready check. The only way for me to use my own synergy was to go close the other healer's energy ball and take the synergy, and then during the cooldown I could use Recovery Convergence. Since Templar's shards have the same cooldown I tried to take my own synergy from my shards but even that was blocked by the healing combustion synergy. The bug persisted after reloadui, roll dodge, and even after death. I even had the prompt while I was resurrecting. So yeah, I had to deliberately seek for the other healer's energy ball which was pretty difficult when you are on the opposite sides of the Chimera.
All of these issues, and possibly other bugs and situations that may come would be lessened if the Recovery Convergence self synergy priority would be higher than other player's synergies.