#4 Triple H appears for no reason
Triple H was apparently a last-minute addition to Survivor Series but there's probably a plan for him to come back eventually and work WrestleMania. After all, Triple H loves WrestleMania and everything that comes with it like his insane entrances resembling the Terminator movies.
Therefore it would be a wise move for Triple H to use this opportunity in the ring to hint at who he intends on colliding with at the Show Of Shows. And at this point, there are many candidates and a few of them are in the men's Survivor Series match.
Whether Triple H winds up feuding with Samoa Joe, Kurt Angle, John Cena, or Jason Jordan something needs to move in that direction at Survivor Series. After all, Triple H doesn't get dressed up in his wrestling best very often so they might as well make it matter.