#3 The Roman Reigns fad
Reigns' loss to Brock Lesnar (well, technically a Triple Threat involving Seth Rollins as well) at WrestleMania 31 was actually closer than his loss at WrestleMania 34.
At WM 34, he didn't just lose to Lesnar. He was pretty much obliterated.
Corey Graves deleted his Tweet! More details HERE.
He was taken down, mounted and split open with the entirely non-PG elbows of Brock Lesnar.
After that weak a performance, it really, really doesn't make sense for Reigns to get another shot at Lesnar so soon after.
Also, it's the Champion that loses his belt that gets an automatic rematch for it. Since when does a disgraced challenger get to contend for it again?
The WWE is crossing all types of lines that they usually don't cross in the hope that somehow Reigns would be able to win the Universal Title from Lesnar under favourable circumstances - namely, in front of a crowd that cheers for him.
What happens after that though?
He's going to come back to the USA on Raw the following week...and get booed out of the building anyway.
It all does seem rather pointless, doesn't it?