Chad losing is kind of expected, and I wouldn't be surprised if he is the 'Raw after Mania' moment.
As much as I love Gable, Sami is the better fit for a big Mania match. - So, you have Gunther retain against Sami...and then you have Gable beat Gunther for the IC title on the Raw after Mania. It honestly works better all around. Gable doesn't get his Mania moment, which hurts...but, people tend not to remember if the moments happen at Mania or the night after anyway, IMO. It will be just as big.
And that tag team ladder match is actually crazy. I can't wait for that.
I have a feeling that two different people are gonna grab the belts at the same time, and that's how they split them back to separate brands.