Obviously Cena because of his rematch clause.

Shawn Michaels, seeing as how they were best friends in DX. I would love a feud between these guys.

IF, WWE used him the way he should be, Shelton should be up there at the top in terms of title shots. He is one of my favorite wrestlers and it pisses me off that he is so underused.

And how can I forget Ric Flair. Triple H + Ric Flair will be an ongoing feud for a long time unless WWE realizes that it will get old.