#2 Charlotte Flair vs. Asuka is the logical way to go
Charlotte Flair and Asuka are bound to clash at some point, sooner or later. It makes sense to fast-track this storyline now that Lacey Evans is unlikely to compete in the Elimination Chamber pay-per-view. The pressure has been building for a while now, and one of the two former WWE Women's Tag Team Champions is likely to turn on the other.
Remember that it was Charlotte Flair snapping and unloading on Lacey Evans that made the WWE RAW Women's Championship match at Elimination Chamber official.
It was Charlotte Flair who ended Asuka's undefeated streak, so there's history to play around with as well. Maybe the two women compete in a Babyface vs. Babyface match at Elimination Chamber and then Asuka turns heel. This could be the setup for a heel turn on the episode of WWE RAW after Elimination Chamber.
Once the heel turn happens, Charlotte Flair vs. heel Asuka could stretch all the way to WrestleMania, because this is certainly a marquee affair.