#3. NXT is going to continue being part of the main roster
Shayna Baszler main evented her first pay-per-view on the main roster as part of Survivor Series but whilst The Queen of Spades was celebrating her win after she forced Bayley to tap, Becky Lynch attacked her from behind to remind her that she was still The Man and that she hadn't been pinned.
This attack was obviously to set up a match that would involve both Ronda Rousey and Shayna Baszler in the future, which means that the NXT stars could be part of the main roster, so the company needed to put them over.
Baszler could be set to lose her NXT Women's Championship to Rhea Ripley in the coming months, which means that she would have nothing tying her to NXT and if this was a shop window for the main roster, then Baszler could potentially be promoted following the show she put on in the main event.
When Rousey returns to WWE, it's likely that she will need Baszler and the other two Horsewomen to help her on the main roster and her win tonight has shown that she is quite a force to be reckoned with.