#2 Becky Lynch (main roster) vs. Shayna Baszler (NXT)

Baszler just dropped Bayley on SmackDown, so shouldn't those two be squaring off? Well, this makes a little more sense with a further explanation. Baszler attacking Bayley is just a warning shot to the rest of the main roster women. Her real target is likely to the top female Superstar in all of WWE, Becky Lynch.
Lynch never got her one-on-one match with Ronda Rousey. This could easily be something very similar as Baszler is a more natural fit in WWE than Rousey. They could build to a Four Horsewomen feud if they want to or not. But I don't think it would be much of a match if Bayley and Baszler faced off. The Queen of Spades would probably go over.
There wouldn't have to be a winner against Lynch as they could easily book someone to interfere. Baszler's goons, Marina Shafir and Jessamyn Duke, could interfere, but I think it would be a perfect spot for Rousey to return. By having a DQ, both women save face and the feud is continued. And if Rousey sticks around, then they can build towards any number of potential dream matches featuring Lynch, Rousey and the rest of the Horsewomen.