If they want Hangman to have a long reign, they probably have Wardlow turn on MJF in the Punk match. If I were booking, Punk becomes number one contender after Wardlow turns on MJF, becomes another big star of the past to put over Hangman, meanwhile MJF puts over Wardlow - who can also then be a one-off TV challenger for the world title - and perhaps one more young fresh face before you build him back to challenge for the world title. That means that when MJF wins the title, he automatically has a couple of ready challengers to make sure his reign is off to a good start.