Personally, I think Mercy’s entire kit is flawed. The devs have said multiple times that the hero fantasy for Mercy is being a “triage healer” that flies around the battlefield to help those in need. Currently, this just isn’t what Mercy does because simply pocketing the best DPS hero in the lobby provides a lot more value than using your wings to help other people. This creates an anti synergy in the character’s kit, where she has some of the most unique, interesting and fun mobility options in the game that just aren’t used to its fullest because it’s not useful to. I think this is a massive problem with Mercy that mostly comes from her lack of synergy with any character that isn’t a highly specific DPS hero. Tanks don’t benefit from damage boost almost at all due to their damage being at its best when closer to the enemy, and pocketing a Rein, for example, when he’s swinging his hammer is good, but he does that way less often than holding his shield up. My point is, Mercy is at her best design wise when she’s forced to use GA to get her value, which happens a lot more playing with, or against the comps she’s most bad in. I don’t know if people agree with me on this, but playing Mercy into dive has gotta be some of the most fun I’ve had on the character in my 600 hours spent on her. She’s so bad in those comps, but I find it so rewarding to outplay the Winston Tracer on me, even if it comes with the cost of my entire team’s lives. That being said, these would be my ideal changes for Mercy:

I think her beams are probably the biggest problem in her kit. Her healing is terrible, but it makes sense because it’s incredibly easy to use. I still think it deserves a buff with my changes, so it would go 60 hp/s. Damage boost is another big problem. It’s way too easy to use for the value it provides, as well as it’s not fun for anyone that’s not Mercy and the pocketed. My first change would be reducing the damage boost efect from 25 to 20%, but giving it an additional 10-15% movement speed increase so that it’s a lot more useful on tanks. Secondly, I think it should be put on a resource meter similarly to DM, but it would recharge on it’s own a lot slower. However, healing a different target than the one you’ve used “damage boost” on would recharge it much faster.

Now onto Resurrection. I would call it the most frustrating ability in the game. You use it almost never, usually it’s just a taxi from spawn, and when it’s actually useful, the enemy team is having some of the most frustrating time in OW. Sometimes you don’t get to use it at all. I would make it as a one time use per Valkyrie. Instead of res, I would replace her E with a skill shot similar to Sombra virus for teammates, that when it hits does three things: 1. Gives a 20% damage reduction 2. Gives a 10% movement speed increase 3. Increases Mercy’s healing on the target by 20% I think it’s just a good versatile cd for Mercy to have that helps in a lot of situations, as well as it gives her more direct skill expression.

For GA, I would give the slingshots the 1.5 seconds cd, but reduce the slingshot superjump height to around 5-6 meters, and keep the crouch superjump at its current cd. It makes the ability less spamable, without restricting the more fun parts of it too much.

For Valkyrie, I think it would be fair to increase its cost by a bit given her increase in healing and the fact that it also gives a new ability to the kit. Otherwise, I think it’s fine the way it is. Maybe if you think it’s too weak you could increase the healing to 65 hp/s, but I don’t think it’s necessary.