It will most likely be a random personal feud with X face, which is boring. I would keep a major angle around him after his reign just so the fans don't forget that he is the top dog behind Cena. Perhaps if they keep Lesnar they can have Punk turn on Heyman, cut a promo on how he's the toughest son of a bitch in WWE and then Lesnar returns as a face. Or maybe he can have his feud with HHH but this time DO IT RIGHT. Or Vince.