What's a concept/mechanic you'd want to delete from the game?

Plain and simple, what concept(s) or mechanic(s) you'd want deleted from the game?

I'll go first: airborne and HP based true dmg. (And yes I'm looking at you Yasu/Yone/Fiora/Vayne mains 😂)

Edit: to clarify, I know Yone and Yasu don't deal hp true dmg, I mentioned them for the airborne part.