#3 Drew McIntyre vs. Sheamus (If McIntyre retains at TLC)
Nobody can question the potential greatness that Drew McIntyre and AJ Styles could produce in their match at TLC, but the result of it is practically guaranteed.
Even though Styles is bound to stay at the top of the card for a few years to come, it's not likely he's winning this one. The very reason why McIntyre recaptured the title was so he could have another dominant run as WWE Champion.
When Drew finishes up his business with Styles at TLC, he will probably move on to face Sheamus at the Royal Rumble. A budding friendship followed by a minor scuffle between the two on the previous episode of RAW can bloom into a full-fledged rivalry for the WWE Championship.
Yes, Sheamus might not be the guy who fans are wanting to see in the main event, but if the storyline is compelling enough, nobody would complain.
WWE might also feel the temptation to thrust The Fiend, who's facing Orton at TLC, into the title hunt. However, it would be wise to keep Drew and Wyatt away from each other at least until Wrestlemania 37, where they could have a contest worthy of that stage.