Swagger is certainly one who is in line for a major push. I couldn't see it for a while (possibly due to the fact I never really watch ECW anymore), but now I certainly can. He's got it.
Matt Hardy's a tricky one. I think turning him heel was definately a good move. Two brothers as faces just won't work, because one will always be more popular than the other. So eliminate that factor, turn the lesser popular one heel. Matt still needs some time, but I think it'd be worth testing the waters main event wise in a few months.
Christian is definately another. I think they're once again, testing the waters with Christian as far as to putting the ECW strap on him. If it's working, he'll be shipping over to SmackDown quicker than you can say "SmackDown". If it wern't for the fact Edge was on SmackDown, i'd say send him to Raw because Raw sure as hell needs some good youth.
The next is definately MVP. He's now ready to make the step up and has recently been flirting with the main event. I really feel it's his time to shine. I was dead against his losing streak (initially), but what a difference that storyline has made to his career. I really feel it's kick-started his face run very well. I saw someone mention on here the other day that he was "trying too hard to be a face". I agree with this to some extent, yet at the same time unfortunately WWE's "Universe" AKA kids really need to be spoon fed when someone's turned heel/face, and unfortunately this is often through over-dramatic actions such as "milking it". I just hope MVP doesn't milk it too hard and become a baby-faced uber face alá John Cena. We need a bit of attitude, and someone who can almost get away with still being a heel, yet be cheered (anti-hero). I honestly think more than ever, the crowd want this. We have enough spoon-feeders, it won't hurt to try it with someone, and MVP's a great candidate.
Selby