#4: The Destroyer does what he does the best
The Royal Rumble was a great show in many aspects, but what it failed to provide was a single surprise entrant, apart from Tye Dillinger at 10, which was a one-off appearance. Fans waiting for Balor, Joe and Nakamura had to settle for Roman Reigns at number 30, which led to bullsh*t chants.
Seth Rollins had to miss the Rumble due to Stephanie McMahon's problems with the Kingslayer, which led to Rollins calling out Triple H every week. He even invaded NXT Takeover event in search of the WWE COO. Triple H finally came to RAW the night after Rumble to answer Rollins, but he didn't come alone.
A WWE Hall of Famer isn't a John Cena fan. More details HERE
Samoa Joe's sneak attack on Rollins and further destruction, which led to Rollins suffering a legitimate injury; which became a huge talking point. It proved WWE's willingness to make Joe a legit top superstar in WWE, and considering the year he had, they were correct.