Evolution versus The Shield is more appealing to me. Triple H and Randy Orton ending up on the same side against The Shield despite their history (Orton even said when he turned face in 2010 that he still hated HHH) and then Triple H announces Batista as their surprise third partner and offers a challenge against The Shield, and that could be how Batista returned to the company.
The probabilities for that are pretty low since Batista is tied up filming his big movie role in the summer but it's cool fantasy booking... So long as The Shield went over, of course. And even with a returning Batista, Shield could plausibly go over. The Rock was the big surprise partner at WM20 and he still lost (funnily enough, against Evolution.) As did Undertaker in the big six man tag match last Monday. Batista wouldn't have to take the pin. That's what Orton is for.