the best solution is that one from paladins - Kinessa can do headshoots but it’s not insta kill, she acually have widows ult + every enemy have 2x dmg if she headshot so with ult is insta kill IF you get headshot.
Sha Lin can’t do headshots, he needs 3body shots. With solve problem with random shooting from hanzo. And belive me sha lin use to be a one shot hanzo and they change it.
But still he got 100% win rate so… thats a skill.
Acually most solutions from paladins would work realy well in ow.