This depends of course on whether CM Punk returns as a heel or a face, but that is up to you in this hypothetical scenario. Who would you have him feud with? CM Punk - heel or not - is inevitably going to return to an array of pops, and because of that, I would prefer him to return as the anti-hero babyface he was during the MITB angle where he was incredibly over. I don't know how long Brock has left during his part-time run, so I would definitely want CM Punk to go over Brock at some point. A feud with Curtis Axel might even be good; it just seems inevitable for him to feud with Heyman guys if he is to return as a face, as they need to swiftly end that alliance. However, I simply can not trust WWE to book the face I want on RAW, let alone book it for a long period of time. It is no secret how lacklustre the writing team is and how outdated Vince is. So I think the safest option in terms of provided entertainment would be for Punk to return as a heel. He is good enough to get the guys cheering to boo no doubt, and we will be provided with better stories and better entertainment, in my honest opinion. What about you?