#6 The Miz can't go over Shane
Even though this seems like the most far-fetched idea in the world, this actually needs to happen at Mania.
Shane McMahon has turned into a full-blown heel for the first time in more than a decade. He attacked The Miz and his dad after their loss to The Usos at WWE Fastlane, and the match was set for WrestleMania.
Shane as a heel is one of the freshest ideas in recent memory, and WWE needs to go along with it for a good while. A win over The Miz would do wonders for a heel Shane, while it wouldn't hurt The Miz's credibility at all, as he has already proven himself to be a bonafide Superstar.
A heel Shane could actually play into the McMahon vs McMahon power struggle storyline that we could get after Mania, ending with Triple H vs Shane McMahon at Summerslam for the control of WWE.
Also read: Predicting the 13-match card for WrestleMania 35