In my opinion yuumi's release was CATastrophic, she's really weak right now even in the hands of professional support players like Zeyzal. What are the plans to bump her up, is the problem primarily on her numbers or on her kit?
We already put in a huge hotfix buff yesterday. She takes awhile to learn to play though, even for professional players. Our playtest team was having pretty big success on her in high elo, but they have played tons of games on her internally before her release