#6 & #5 Buddy Murphy and Austin Theory

Buddy Murphy and Austin Theory joined up with Seth Rollins in hopes of reviving their careers, and battling Rey Mysterio has definitely helped achieve that goal. Not only is that evident by Mysterio's veteran status in the company, but also by how personal the whole feud is at this point in time.
In the current storyline between Rollins's cult and Mysterio's family, it's pretty obvious that a premature conclusion would be less than appealing. Of course WWE could just find a way to write Mysterio off television and turn attention to Aleister Black and Humberto Carrillo, but it wouldn't have the same effect.
Look who just shut down all of Tony Khan's critics! More HERE.
In the end, the name of the game is momentum and for Murphy and Theory to keep that, they are going to need Rey Mysterio to stay around. Either that, or be forced to target someone else and find a way to make the fans care about that instead of the original storyline.