#2. Seth Rollins loses, starting a downward spiral
Seth Rollins could end up losing clean and it can be a good part of the story and one that's very important for character development. There's no doubt that overall, Seth Rollins has had one of the best character arcs over the last 5 years.
However, he has lost quite a bit of steam in between both Universal Championship reigns and WWE needs to look for different ways to get fans invested in him again as their top babyface. There is still a big story to tell with him as a face and as of now, things look like they're spiraling downwards for The Architect.
What he needs is a downward spiraling storyline where he loses matches, even non-title ones. It doesn't mean that he has to lose every match, but Roman Reigns is the perfect opponent to tell the story of him not being on the level that he should be as the Universal Champion.
Fans want to see some real character development and this match is perfect for that.
Also read: 5 reasons why WWE told The Undertaker he "wasn't needed" for the SmackDown on FOX Premiere