Thereās been so much recent debate over 50 HPS or 60 HPS, throwing ideas around of making her unable to heal that much during GA, nerfing damage boost etc. but realistically I think itās safe to say that giving her an ability on her Reload button that temporarily boosts her healing output would be a lot healthier than a flat HPS buff. And also, Mercy just needs more things to do. People may say her kit is ābloatedā but having an E ability you use 6 times a game and nothing else to contribute outside your beams is not a lot to do and manage. GA is also the shortest CD ability in the game and rez is the longest so whereās the actual CD management that other healers have?
For one, a heal boost ability on R, regardless of if itās cooldown based or a resource meter, would be more skillful than a flat HPS buff.
Youād have to make conscious decisions on when and how to use it, itād have uptime and downtime to manage, and itās greatly increase the decision making that goes into her healing. Itād be a lot more interesting that just a flat 60 or 55 HPS buff that every Mercy player has just for pressing m1 on an ally. It would raise her skill ceiling and impact proportionally, as Mercy players who were good at managing it would do more healing than bad Mercy players, which is always good for the hero.
They could do it one of two ways, a cooldown or a resource meter.
Cooldown could be something like you press R to do 60 HPS for 4 seconds, then it goes on a 12 second cooldown.
But Iād personally prefer it to be a resource meter like D.vaās Defense Matrix and Moiraās heal. Something like:
You have a resource meter of 6 seconds of 60 HPS, and hold down R to use it. It drains over time as you use it, and stops when itās empty. The resource meter increases slowly passively over time, but you can fill it up faster with damage boost.
(Or make it % based, so she does 25% more healing during it, which also bumps up her Valk healing)
Just think about how that would really increase the brainpower required to get maximum value out of Mercy. Youād not only be beam juggling like usual but have to manage a resource-based healing mechanic to perform at maximum value. Call it Cadeuceus Overload and make the beam glow much brighter for the duration so you and the enemies both have a visual indicator.
Then itād even directly make Valkyrie more interesting as you could use it during Valk to give increased healing to all teammates in an AoE for a few seconds.
We know that R abilities are not a wild idea, as the Devs have experimented with giving one to both Hanzo and to Reinheart since neither of them have to reload either. Geoff also said
When I asked him last year, but his statement is no longer true as Moira, Bap, and Ana are all outhealing Mercy on average in GM whilst contributing a lot more damage and Brig is only 1,000 healing behind her. Even after Bap and Moiraās HPS nerf they still outheal Mercy 
I just want a change that allows Mercy to be viable in the higher tiers again. She does great at keeping herself alive all teamfight, but canāt really sustain her team and thus has been moved into an off-healer role alongside Ana 99% of the time. If you try running her as a main healer with a Zen or Lucio, youāre basically throwing. And I donāt know about you guys but I really miss Zen Mercy being a viable comp. It was super offensive with relatively low but sustained burst healing and an offensive punch!
Higher healing would allow Mercy to be played as a main support again, and not just as:
