I haven't seen Smackdown in a while, however when I saw MVP face Ric Flair at the Royal Rumble, he actually did pretty good, despite Flair's sloppy performance.
Porter has gotten better since not wrestling for over 3 months when he feuded with Matt Hardy, but I would like him to step it up a notch and see what he's capable of in the Main Event scene. I believe when Matt gets better, he'll come after MVP and the U.S. Championship, then we'll see a good midcard match.
Mr. Kennedy has also stepped up, however, when opportunity would come his way, there's always something there to destroy his path to becoming a World Champion. First it was the shoulder injury that cost him his MITB spot and cash it in before this year's Wrestlemania, then there's the steroid scandal when it was announced that he would be the bastard son of Vince McMahon, leading to his spot in the Main Event and up to a World Championship match at Wrestlemania. His abilties are up there, but despite his efforts, he won't be getting the spotlight for a while until all this mess is cleaned up.
In short, I think both of them have a future in the WWE, but they need to step up their game and truly make a name. When they have the torch, they shouldn't snuff it out, they should run with it.
-Sharp