Master Yi is not nerfed enough.
Honestly, you have players whining about how the old Fiora's ult takes no skill and deals tons of damage, but you let someone else have it on his Q which has a decreasing cooldown the more he auto attacks. You also give him the ability to heal like Garen on steroids. Then you give him an olaf ult split into 2. He has increased speed and can't be slowed and he gets more AD by pressing one button. Honestly, I call Yi a fake champion because he's just a mix of various other champions. Really Riot, there needs to be a change to Yi.