Swerve for the sake of a swerve

With it being officially announced that Seth Rollins will face an opponent of Mr. McMahon choosing at WrestleMania, what are the odds that we get the shocking debut of Gable Steveson to mess with the crowd who is totally expecting Cody?
I don't think Gable is particularly that big of a star as of yet.  What we need is MARKO STUNT.