Buff Quinn
I think Quinn needs a little attention to her ult cooldown. Her cd for her ult in 140/110/80, in the early and mid game that is a bit high for an ultimate like hers. Her ultimate is not game breaking, doesn't provide any cc or does an enormous amount of damage like a Caitlyn ult, Tristana ult, or a Graves ult. Having her ultimate at 140 and 110 seconds in the early and mid stages of the game leave her to rely only on aa'ing champs and using her spells. Possibly maybe a passive where, her vault gets cd for every certain amount of aa's, kinda of like a Lucian passive. But basically lowering her cd for her ultimate will help become stronger as a adc/top laner.