Great job on Quinn Riot!
These recent changes are exactly what she needed. She now feels like a wonderfully dynamic duelist who has great map pressure. Her Q is awesome, especially making plays with her E around it, but requires skill to use. The scaling changes on her passive really help her feel relevant even when she's behind and push for a stronger late game damage (something it desperately needed). I love her ult as-is, it takes a lot of skill to coordinate correctly and I don't want to see it have a cd; I'm fine with the 2 second channel, I've been able to pull it off several times even in the midst of a fight by just backing off a bit or ducking out of vision. It makes for some awesome plays.
Also, as an added bonus, jungle quinn is now far more viable, which I really missed from when they took her blind away. The first clear is sketchy, but after she gets her tracker's knife (or other upgrades, if you want to go there) she really beats the crap out of the jungle, and her ult is amazing for setting up ganks and applying pressure. She feels awesome, cohesive, with clear weaknesses and clear strengths.
TL;DR: Don't mess with quinn anymore, she's perfect now. Great work!
