Raw MITB
Kofi vs JoMo vs Miz vs ARi vs Dolph vs Del Rio vs Truth vs Rey
I'd like to see Dolph win it, but I think Del Rio will (I don't think he needs it). Miz and Rey don't need it, Kofi and JoMo are not world champion material (especially for Raw), Truth won't need it to get over and ARi is way too green (although incredibly awesome).
Smackdown MITB
Barrett vs Rhodes vs Cara vs Bryan vs Sheamus vs Jackson vs DiBiase vs Gabriel
I would LOVE to see Cody Rhodes win it (his Disfigured gimmick is epic) and set up a long fued between him and Randy, but I think Wade Barrett is getting the "Drop the minor win the major strap" treatment. Daniel Bryan could also do with the win to help elevate him, although I don't think I could take him seriously as a world champion yet. DiBiase and Gabriel aren't world champion material and Jackson should hold his strap for a while. Cara isn't ready yet and Sheamus does not need it at all.
Safe money certainly suggests Del Rio wins it, even though it does seem a little redundant considering he qualified as no. 1 contender last night on the Raw taping. But considering Rock/Cena is essentially a lock for the WWE championship (the right move) I think a delayed MitB cash in would just result in a huge mess and needs to be performed quickly. Ideally, I would have had Mysterio cash it in and save the WWE Championship from Punk and in the process set up a big Mysterio/Cena clash at SummerSlam but with the new stip added to the match I can just see somebody like ADR cash it in on Cena post-match leading to a program where surprise surprise Cena comes out on top.
Smackdown is certainly trickier. I like Rhodes but this paper bag bit is getting stale, it should have been used at best as a two week bit before moving on and giving him a serious feud BUT this is the WWE we're talking about. They milk bits until they turn into powder. Now can I get a 'Damn' in here? Barrett to win and insert himself into the main event picture, where he belonged in the first place.
As for Bryan, normally I'd say great in-ring competitors don't make for great WWE champions but in a day and age where Swagger, Miz and Ziggler have had championship reigns it really wouldn't matter. His WWE career has been stagnant for about 8 months now after a good start where they basically dedicated an entire show to him and had him star in the second biggest show of the year.
If it was me, I'd be setting up a Christian/Bryan feud for SummerSlam. Imagine just how good that match would be if given time.