Reworking Quinn and looking at Blinding Assault
Firstly I think Quinn's rework should take a similar direction to Talon's and Katarina's where both champions take more skill after their reworks.
But anyways...
Blinding Assault is overloaded.
Blinding Assault is actually a real stale ability. I know a lot of Quinn players loved the blind and love the nearsight but when you take the time to really break down the ability it's stale but takes up a lot of power in Quinn's kit. Reason being it has high damage, good CC, and procs harrier. Having so much necessity on landing this ability makes the power distribution around Quinn's kit feel bad. Her W and E are strictly utility in comparison and I think that is lame. I DO THINK THAT QUINN SHOULD KEEP HER NEARSIGHT IN SOME WAY, but I also think that it could be done better. Quinn's kit is like 90% Q (I don't even consider her ultimate...) and it's a nice ability but it's just too overloaded.
Comparing Quinn to another unique marksmen like Twitch. Twitch has his Q which has good power on it, his W which has good power on it, his E which has good power on it, and his R which has good power on it. I'm not talking about the strategic thought behind these abilities but I'm focusing on power distribution and I think Quinn's Q just takes so much of her kit. I'm even considering moving it to a passive or something somehow but having it on demand is pretty good...