Women's Tag Team Titles: Bayley and Sasha Banks (c) vs. Sky Pirates vs. Mandy Rose and Sonya Deville
Depending on how WWE books the champions to defend the newest titles to the company, a multi-team match, like the US Championship, might be a good way to provide a great showcase match at WrestleMania 35.
Nia Jax and Tamina are getting a shot at Fastlane and they aren't going to win that match. The team is only a threat because of the way Nia Jax is treated as Tamina is part of the team to take the pins.
WWE might eventually rotate the shows which the challengers come from, but an easy way to showcase a team from each brand might be to have one from SmackDown and one from NXT.
None of the other female teams right now seem like they would be good enough to carry the tag team division for the women. Banks and Bayley are, so they should have a long reign.
Mandy Rose and Sonya Deville were booked almost as strong as the Boss 'N Hug Connection at Elimination Chamber, so they should be involved. They've both improved in the ring over the last year.
I know Io Shirai is likely headed for an NXT Women's Title match the night before, but with only a match or two under their belts, the Sky Pirates (Shirai and Kairi Sane) are much more exciting to me than any of the other tag teams on SmackDown or Raw.
The Riott Squad isn't their yet and the IIconics haven't had the best booking on the main roster of WWE.
WWE might want to bring back two of the biggest names from the past in Lita and Trish Stratus in order to provide the biggest match possible, but this should be a showcase of current talent.