The complaints I see that are used to justify “delete mass rez”…
“It was instacast! You couldn’t do anything to stop it!”
Then add a cast time.
"She could hide behind walls or under the point to rez!"
Then add a LoS restriction.
It made her invincible!
Then remove invincibility. Flying in 1v6 without it becomes suicide, because for the next 3 seconds Mercy is waiting for her allies to finish reviving while she’s stuck, alone, in the middle of her enemies.
Kill her. Then have fun winning the next fight due to the enemy team being down their main healer from the start.
“It incentivized letting teammates die!”
Then give Mercy something else that can save teammates after her base healing isn’t enough to keep them alive.
Ana has her nade. Moira has her orb. But rez has always been Mercy’s only back-up plan when her primary healing becomes overwhelmed. Give Mercy an emergency healing ability, and she won’t have to lean so hard on rez to pick up the slack.
“Hide n Rez!”
Every change I just listed would make that tactic not only substandard, but impossible. Fly in 1v6? Get wrecked by cc or lethal damage while you’re still casting. Get the rez off anyways? Get killed before your allies are done reviving, dooming them to lose the next fight 80% of the time.
Mass Rez’s problems were fixable. The only time you should delete things is when their problems are inherent to their very existence, and therefore can’t be fixed… like rez as a cooldown ability.
But wait! There’s more!
“Mass rez felt bad to play against!”
So? Where’s the complaints about Graviton feeling bad to play against? Or any other ult?
“It undoes all my team’s hard work!”
I have two answers, depending on how you killed the enemy team:
Killed them with Q presses: Either you’re trading a Q press for another Q press (which leaves your teams even), or you used too many ults at once. It’s called ult economy, and you should be practicing that anyways. Some heroes punish you for being out of position. Others punish you for being too hasty to press Q.
Killed them without Q presses: Good job! No, seriously. If you didn’t have your ult before, doing all that damage probably means you have it now. Now you have enemies who can’t shoot or use their ablities to defend themselves or run away for several seconds during the revive animation, which means you can leisurely line up a sick PotG worthy ult without worrying about them stopping you.
Quick tips: High Noon locks onto targets even when they’re invulnerable, and Dva’s bomb timer is only a little longer than the rez’s invulnerablity period. Hammond’s minefield has the same range as AoE rez, and Mei’s blizzard is bigger. Enjoy your free multikill!
Third option: Remember how eveyone is complaining about the amount of stuns in the game these days? Imagine how satisfying it would be to stop a Mercy ult that way. InB4 highlight reels of Doomfist with Terry Crews audio, shouting “OH, HELL NO!” as he punches a Mercy casting Rez in the face.
EDIT, after seeing some of the coments:
“All these changes would make Mercy trash!”
Then give Mercy a midfight E ability and/or a utility-based secondary fire to her sidearm, so she isn’t so appallingly ult dependent.
If the devs don’t want Mercy to be so focused on rez, then they need to give her more to do in a fight than just staying alive, juggling beams and planning for the next rez.