As someone who plays a fair amount of Yuumi, she should not exist
One of the most infuriating and frustrating champs in the game to play against and sometimes it feels unfair when I'm playing her. The fact she spends the majority of the game untargetable is insane. She provides whoever she's attached to an insane amount of damage in the later game.
But I think what annoys me most about her is that damn q. It's borderline undodgeable "skillshot" and having to lane against it is a nightmare. It honestly feels like yuumi has no weak point throughout the game. Her late game scaling is nuts with the stats she provides for her attached ally. And in lane phase, the constant q harass that you can't even dodge is impossible to lane against.
The only thing I could think of is to make her lane phase much worse. Make her q cost more mana when attached, make it slower, I don't know. I love playing yuumi. She's one of my favorite supports in the game to play. But she shouldn't be this damn strong.
he absolutely destroys her 0 frustration involved see adc with yuumi? good now you can slow the adc and yuumi cant do anything about it. now if yuumi is separated from adc too far range NOW you can E/double bomb her now shes either dead or critically injured. its a catch 22 situation all she can do is shield/heal the enemy.