Quinn needs nerfs.
Let's just talk about a near 10% spike (8.34 to be exact) increase in win rate due to the changes on her (and buffs) in 5.23. Considering 40.8% of her playerbase have played her only 1-5 games, and she still has that high of a win rate, that's pretty unfair if you ask me. I don't care what you do Riot, but I at least recommend removing her Q blind, and nerfing it's damage.