As much as i'd love to see it, it shouldn't happen. Let Shawn stay retired.
If we were just talking hypothetically, i'd think he would want a big revenge match against Lesnar. Though failing that, maybe a match with Bryan? I mean imagine those two together. Great charisma from both. Great selling. Hell, imagine the selling between Ziggler and Michaels? Haha.
This. Thanks for posting it. Was looking for those HBK and Rock Mania pics. :3
Rock would get my vote. It doesn't need to happen, but I think it'd be a big attraction.
I understand he might prefer to stay retired and I am fine with that too.
CM Punk holds world title for over 250 days. [X]
Zack Ryder wins another title. 
John Morrison comes back OR he reaches one million Facebook likes. [X]
Triple H vs Lesnar happens. [X]
Wade Barrett, Rey Mysterio, or Christian return. [X]
Cena takes time off.