Miz never was really midcard to be honest, he feuded with Riley to step away from the WWE Title and then Punk struck gold and Miz was still main event just not a title contender. As for Swagger his downfall was his dreadful mic skills and charisma. Kane however was made Champion out of respect due to him only having a few title reigns not even credible to be honest. He was interesting though. I guarantee Bryan will cash in on CM Punk next year. I see it happening for some reason.
Unless CM Punk gets the world title on Smackdown, I don't see that happening at all... and I honestly believe that the ones who do see it are delusional indy marks who can't get their brains back to reality.
If anything, DB will use this MITB to feud with Henry where he'll become the first to lose.
As for the MITB being a curse, I don't see it. In every case, except Swagger, the MITB winners were always kept around the main event spot. Miz and R-Truth are both being used to give credit to the tag team division, while also building Bourne and Kofi as viable champions.
Alberto Del Rio will undoubtedly be put into the next match for the WWE title and the two will probably feud until Survivor Series with it ending in Team Rock & Cena vs. Team Del Rio.
CM Punk in his first run won the WHC, IC title, and Tag Team title within a six month period and would later win the MITB again which resulted in two more World title reigns. And after that, he was used in high profile rivalries against Rey Mysterio and Big Show before coming back to Raw and joining New Nexus. In New Nexus, he rivaled both John Cena and Randy Orton which had two high profile matches for each person. Then recently, he struck gold with a promo and soared to new heights where he became WWE Champion, a new big time player, and is now in the highest profile storyline of the WWE. Hardly think that's a curse.
Jack Swagger is probably the only exception that the argument can work for, but even then, he's got the look and physical skill to be world champion again but he just needs a valid manager. Like Vickie or even Matt Striker.'
Again, I don't really see the arguments here. Every MITB champion has benefited from this from a huge outlook and have come out to be very big time players. Sure, they may dwindle from the Main Event scene, but come on... it's not like every match on the card can be the main event.