My Admittedly Outlandish Hope for WM29
As you can see from the title, this is admittedly outlandish, but I think this would make for an amazing Wrestlemania:
Ziggler wins the Royal Rumble and beats the Rock at WM29 for the WWE Title. He then cashes in his MIB contract and beats whoever for the World Heavyweight Title, thus unifying the titles and cementing Ziggler as the man for the rest of 2013. They could also have Ziggler win another MIB match at WM29 and then "steal" both belts by cashing both contracts right after the respective matches.
Like I said, outlandish, but it would be awesome.