During the audience questions someone posited the idea that Deckard Shaw should wind up with amnesia and then become Chev Chelios thus uniting the Fast & Furious and Crank universes, but I think he had it all wrong. See - the reason Shaw couldn't bring down Toretto and his crew was because he didn't have the singular focus on the one skill needed to get the job done - driving. Sure, he can drive, but it's not his obsession. So in Fast 8 what they oughta do is have Shaw's twin brother Frank show up to get the job done because he's the goddamn Transporter and he's the fucking best at car fighting. Say Frank took the last name Martin because he had to go into hiding when he was doing all his Transporting or whatever bullshit you need - hell, you were able to retcon Tokyo Drift to be the actual 8th movie in the franchise, you can come up with something. But then Frank sees that his family is for shit and that Toretto's family is the truth so he double crosses his brothers, car fights them and then joins the good guy car fighters for Fast 9 & 10.
Right? You're fucking A right it's right.