Re: CM Punk - From the Rock to Wrestlemania
I'd have Heyman turn on Punk and join the Shield, by having them turn on him at some point after the rumble, and then shaking hands with Heyman.. Then it's revealed that Heyman was behind the shield/Maddox without Punk's knowledge, and that Heyman used Punk the whole time, and that he is now worthless to him without the WWE championship.
The Rock vs Brock Lesnar
John Cena vs The Undertaker
CM Punk vs The shield
Well that's what I'd do.