It could be WWE all time dream team and I really think WWE could do it at this time. You have team WWE(the establishment) Rock, Cena, HHH, Jericho, and Taker if he can compete.
Then you have Punk's team of people who are unhappy with there positions. Start with Randy coming back and being made with his place on the card and being on smackdown etc. Then a returning Batista if they could do it. He has history with Cena, and HHH obviously and Cena injured him before he left. Then Lesnar if he's still part time they could get him for this match. And then Big Show or Miz for the final 5th spot. As both are heels and unhappy with there positions obviously.
So you got Cena,HHH,Rock, Taker, and Jericho(Team Dream Team of WWE past and present. Vs. Team Punk(Orton, Batista, Lesnar, and Show or Miz).
For bragging rights and awesomeness. The promos leading up to it would be legendary. From all ten competitors.