To be honest, I really wouldn't be opposed to them swapping out Miz and Morrison (provided they can't get Morrison) for even a real Sheamus/Del Rio team. Both guys ARE great in the ring, and they have that "former World Champion" thing that Angle & Benoit sort of had when they were teamed together. Zayn & Cesaro would be a tremendous little duo. Jericho & Owens have already proven they are great together. They'd steal the show every segment they were in. Couple that with the Cena/Styles program they probably have planned and SmackDown starts off in pretty good shape.
Down the line they can bring in Christopher Daniels to get involved with Styles and Joe.