#3. Roman Reigns' upcoming alliances
Roman Reigns had to face tremendous odds against King Corbin in their TLC match. Firstly, it was a bit perplexing that WWE gave the TLC stipulation to a match that didn't have a title on the line - especially when they already had one that made sense (the Women's Tag Team Title match).
He had to face King Corbin, his security, Dolph Ziggler, and The Revival as well. As you would imagine, the numbers game would overcome him and he was on the bad end of a beatdown from all the men. He ate a Shatter Machine followed by The End of Days on a steel chair and lost to Corbin.
Given that it's 4-on-1, Reigns is going to seek an alliance and the obvious ones as of now seem to be Kofi Kingston, Big E, Shorty Gable, and potentially Ali.
It was implied when the backstage brawl began and that's the direction that we'll be ending the year with. Not that he wasn't in an alliance anyway, but now it's a program WWE has to drag on till Royal Rumble time.