Re: Why Mabel?
As people have said, there were too many faces in that time. Stupid booking, if you're asking me.
As for Mabel, well, they needed someone to make it look like Diesel is going to lose. That's why Nash sucked as a champion. He can't be the underdog. He's Kevin Freakin' Nash! A heel run with the belt would've worked.
Also, Mabel said that he knew in January that he will be the king.