2. Clint Eastwood
He's kind of getting up there in ages, and hasn't been known for his action prowess much since he last picked up his .44 in The Dead Pool, but he does draw an audience. He was once a Western-Genre titan, and a lot of his self directed movies feature western elements. Can you picture a Fast & Furious movie that plays out like an old school Western? Easy isn't it? Probably because they already do. Of course, Clint doesn't like acting in movies he doesn't direct anymore so he'd probably have to direct the movie he was in... I really don't see a downside to any of this, do you? Ideally, I'd like to see him as the antagonist in the final two entries in the series. Have him as a nameless mastermind in the first movie, and then carry the story over to the second movie where he is revealed... and keep him nameless for old time's sake. A little too self indulgent for him? Yeah, maybe, but it would be amazing.