Zed with his last hit passive.
You are totally right, ppl looks “winrate” like if that is just a “good or bad” thing.
Yi is broken and others champions too.
Arena had balancing done better, aram just have a “+5 +10 + 15 %” buff or nerf that breaks balance.
Deleting Irelia from the game, along with Yummy, Riven, Seraphine is the best action to take.