#4 Big E turns on The New Day, helping The Usos win
Many believe that The New Day, as entertaining and as popular as they are, have run their course in the company, and there's very little for them to achieve as a unit.
Kofi Kingston is certain to go in the Hall of Fame some day, and with his size and athleticism, we can see Xavier Woods becoming a viable mid card superstar and possibly even Cruiserweight Champion if he decides to step into the land of purple ropes. That leaves us with Big E, a man with serious potential as a singles star.
Could SummerSlam 2017 be the stage where Big E decides to turn on his team, and cost them the match on the big stage against The Usos. His reason could be that he was held back because of The New Day sticking together as a stable. He could maintain that he was meant for bigger and better things.
This would give The New Day an interesting internal conflict to resolve, whereas The Usos could possibly defend their championships against Breezango or the newly formed unit of Dillinger and Sami Zayn.