New perk “Quick Fix”
Notes: this allows Mercy to invest big resources to make big plays while trying to keep the ability’s potential of bringing back a tank nearly instantly somewhat in check
Additionally, since the perk can only be activated when rezzing without Valk, Mercy would still need to put herself in harms way to perform a rez in the first place.
So. I have to fly my 5’5" 115 lb body over there and stand directly on top of the tank’s body. Spend my rez, then spent my ult. And it brings back my teammate with less health than a standard rez.
Meanwhile Grandma’s over here getting double nades and double nanos for free.
The caste system is real.
We all know Mercy would never receive a powerful perk without restrictions.
She is not Ana, therefore I came up with something actually somewhat kinda realistic for the Mercy hating dev team.
If it was up to me I’d give her a perk to make rez in Valk instant. Period. But that’ll never happen
Your restictriction sucks. Like how in anyway is that good?
Use your ult to revive one person at half health.
The tradeoff can be to simply increase the hp threshold at which allies are revived.
Valk is already very often just used to go for a risky rez anyway.
And I very very much doubt that they will ever give Mercy a rez cast time reduction or instant rez without significant tradeoffs
Insta rezzing tanks? Literally the most powerful thing instant rez was always used for, insta rezzing tanks.
Not to mention the rez isn’t 50% hp flat. It’s 50% + 75 base health, meaning a 250 hp hero that’s being instarezzes is revived at 200 hp (aka more than half)
Idea…
Major perk: Necromercy (placeholder lol)
Resurrect has no cast time.
Player resurrects at full hp into a half-life/zombified state. This is represented via a subtle purple visual effect on the player somewhere that all can see. Maybe their shoulders. Or a purple halo above their head.
They have full access to everything, but has 10 seconds to deal 50% damage in an elim (must elim, dmg starting after the rez not before) or get the final blow. If accomplished, they cement their new life. If they fail, once 10s are up their health drains at 125hps until they die or get that final blow. (Hard pockets could extend time.)
They can be healed but the purple halo blocks her damage boost.
The idea is to make rez more useful and occur way more often in the fight. It keeps to mercys shtick in boosting her teammates, she does the rez but its up to the zombie teammate to get the kill now.
Remove the pre fight resurrects that annoy many players in place for midfight rez that come with restrictions, such as no dmg boost on the rezzed guy until he removes his halo.
Even if the rezzed guy doesn’t get fully rezzed, maybe he does enough to turn the fight.
You deserve to to burn for this 
Then just rez them normally.
A wasted ult for 1 second saved?
No thanks.
Still not worth the ult use.
Ooooh, we really need this
In another character of course
But must be pronto xD
Flash Heal should be replaced with a cleanse ability. I’ve always thought it was ridiculous for the doctor to not have a cleanse, yet they gave one to Kiriko.
I really like flash heal, some of the most fun I’ve had on mercy in a long time. I hope they keep it.
Yeah you absolutely can’t do that without cover.
This actually allows to rez with ult without having to rely on your ally to die in a rezzable position aka near cover.
Or, they could just put Rez back into the form of an Ult and take it off of her basic ability list.
Make it part of Valkyrie. Give her a bit less mobility, but allow her to Res as many people as she wants, one at a time. Then instead of her Res, give her maybe a new ability that focuses on defense of another player.
If you can only rez with cover, there might be a skill isue that needs to be worked on, not changing the ability.
Or just change it to direct line of sight.
Girl idk what ranks you play at but rezzing without cover is probably about the single MOST STUPID thing a Mercy can do 90% of the time.
That’s literally the go-to way for a Mercy to kill herself.
Rezzing in the open is only ever even attemptable during Valk and even then a single person camping the body can deny you that rez and kill you.
If you can pull of rezzes with no cover all the time, you are likely not ranked high enough to have an opinion on this. Or you’re a Quick Play warrior, which is about the same thing.
A rez with no cover anywhere above plat will result in your death unless enemies are already distraced.
“you can pull off something I think you shouldn’t be able to, so that somehow makes you… bad”
Where’s the logic in that? 
So you learn how to do it.
There are ways to do it.
And you not being able to do so doesn’t mean those who can’t are somehow bad.
It’s about timing. Using your team. Communication. Superjump.
Because your team isn’t always going to die where it’s “convienent” for you.
This conversation is going nowhere.
Your “solution” is pants.
Your “ideas” are pants.
If rezzing without cover was that common the average rez count per ten minutes wouldn’t be 4.
You are not some magically special Mercy player.
I’m playing in high ranks, I watch high ranks and rezzing without cover is suicide 90% of the time.
Literally tell me your rank and give me a replay and show me just how much better you are at rezzing than the rest if the playerbase.