Just wondering, if you are aiming for quick game that ends before late game kicks in, would Quinn + Leona combo be a good match?
Leona can keep a champion in his/her for a quite long time, and Quinn beats most adcs when it comes to base AD and attack speed. I also believe that if the two can burst with coordination, at least 3 of Leona's passive marks would proc, along with 2 Harrier procs (which should be a near death sentence to a target). In addition, I think both champions are quite good when it comes into those "high-risk, high-reward" situations and they both can dive in quite nicely.
And no, I did not forget Quinn's aoe blind.