#3 Does Nia Jax return to finish what she started?
Becky Lynch recently said she has no beef with Nia Jax. However, the same can't be assumed for Nia Jax. Jax seemed like a logical first opponent for Becky 2 Belts following WrestleMania. Unfortunately, she's been out of action since tearing her ACL in both knees in April. The history is still there between the two to revisit the feud when Jax is ready to go.
Of course, there was the infamous punch from Nia Jax last November that concussed Becky. That incident kept The Man out of Survivor Series and arguably propelled her to the main event of WrestleMania.
Lynch got her revenge at TLC when she attacked Jax backstage, and then again when she eliminated her in the Royal Rumble match.
Assuming she's back to full fitness, I'd have Jax attack Lynch after her successful title defense against Asuka at the Royal Rumble. That would set up a match with plenty of spice to add to either the Fastlane or Elimination Chamber card.
Does Jax get the win? No. I don't see it personally. It comes down to who would the WWE want to have as champion heading into WrestleMania and the answer for that would be Lynch in all probability.