That would be preeeeetty sweet, honestly. Yesterday after reading your SU, I had this scenario in my head, where Renegade fell off of a tall building or the like, without a way to really... stop himself from falling, so Quantum breaks off a fight with someone to fly down and grab him mid-air.
And due to him being a tactical genius, he immediately gets an idea and tells her to do something crazy, like... "Throw me as high up as you can!", to which Quantum would obviously go "u wot m8", but he'd insist and she'd do it, which in the end, gives him the drop on an enemy or the like, and Quantum possibly having to catch him again (Which he'd already planned on her doing without having to tell her).
Anyways, I'm rambling! It was just a brief scenario that popped up in my head xD But yeah, could easily have an epic battle like that! Like Captain America and Iron Man in Civil War! And if they became friends, Renegade could possibly teach her a bit of martial arts :3