Ok, so a common trend I am noticing is that people are unhappy with GS. So, lets brainstorm an idea.
Here's my thought...right now it increases heals by 40%, and if it actually saves the person, it gives them a heal in the amount of 10% of their HP. lasts 10 seconds.
My suggestion: Increase all healing by 20%, if it saves the person, they get a heal of 20% of their HP. Lasts 10 seconds. IF THE EFFECT EXPIRES ON IT'S OWN, INCREASES HEALING RECEIVED BY 10% FOR 1 MINUTE.
So, it's an "oh Sh!t" button that can save the tanks life, but it also has an effect of "if you play smart and keep your tank alive, you can get a bad-ass passive buff" That would allow this to be up 1/3rd of the time in a fight, and you can plan ahead for enrages or harder phases.