I love Titanium’s suggestions as well!
I personally don’t think that her issue is so much her skill ceiling, more so than the issue is that she is unengaging, unrewarding, and unimpactful to play. As was also suggested in that thread would be some sort of a revert of bringing Mass res back into her ultimate with various tweaks to make it a balance-able ability, along with Pacify, which furthers her impact even more without so much as sacrifice her skill requirements.
Some other ideas based on a previous post. A halo ability could also be used as her skill move. Just some thoughts
Revert Mercy. Have her Ultimate be Resurrect.
Tweak her ult to have LoS, make her vulnerable to the usual CC, and give her damage reduction instead of the invincibility buff she’s had in 1.x right before her rework. An alternative would be to also make it function like McCree’s Ult, where depending on how much the crosshairs are fill up, she is able to successfully res her target with that percentage of health (10% filled = 10% of their hp restored).
Make her E move Either Pacify, Halo, or a watered down version of Valkyrie on a cooldown. Abilities for Pacify and Halo explained below:
New Basic Ability - Pacify:
After a .5 second wind-up, Mercy launches a single hitscan attack from her left hand.
The projectile’s hitbox size resembles that of Symmetra’s secondary fire.
The projectile deals no damage upon impact with an enemy. Instead, it applies a debuff that reduces the base damage dealt by the target by 33%. 100 damage is reduced to 67 damage before other damage amplifiers/reductions are factored in.
This debuff lasts for 4 seconds.
The projectile does not persist once it hits an enemy. It is only able to affect one enemy for each use.
The projectile is blocked by barriers, Defense Matrix, and Particle Barriers. It can be deflected by Genji’s Deflect ability.
10 second cooldown. The cooldown begins after the ability is cast.
There is a .25 second wind-down time after Pacify is launched.
During the wind-up and wind-down times, Mercy is not able to use her staff, her pistol, or Resurrect. She may use Guardian Angel, however.
Does not affect non-player entities and constructs (turrets, Rip-Tire, Supercharger, etc).
OR
New Basic Ability - Halo
Mercy places a biotic halo over a single target for 3 seconds which prevents the hero from taking fatal damage (keeping them alive with 1 hp) and converts half of the damage taken into health.
This ability has a 20 second cool-down.
The move has a 1.5 second delay before activating, so the target must be alive for the 1.5 duration before receiving the health from their halo.
Heroes with halos do NOT receive healing or damage boosting from any support when Halo is in effect. Halo is only activated through Line of Sight.
Note: (I.e. A hero with 200 health that receives a halo before taking 200 damage, and stays alive with 1hp for the 1.5 duration, receives 100hp back as health). Heroes that have Halos cannot be healed or damage boosted, and only one Halo may be used at any time.
Certainly that would be my idea of a perfectly engaging, fair, and fun Revert + Rework on the hero.
~Sincerely Yours xoxo,
a Lover of True, Fair, and Fun Balance.
xavvypls