Guys, remember that she got injured in the Ember match and will be out for a month. It's a blessing that she had to relinquish it, as now they can actually move her up to a big brand because the NXT strap is off her.
I think there's no room for Asuka on Raw, as they should continue to groom Nia as the Braun-esque monster and eventually have a dominant title run when she's ready. Bliss should be an option to turn face after the Sasha program, if her trending fan support will tell WWE booking anything. Bayley can come back as face repackaged or turn heel, so they don't need Asuka to fill a role on Raw.
On SD, they need top female stars. Becky is there, Carmella is pushed as top heel. Naomi is there. Charlotte. You bring in Asuka and she will be able to step in as THE scary talent on SD. I mean, think of what they are doing with Tamina right now. Seems they are gonna build her up to be more fierce and shake her jobber title. By the time Asuka healed, and if Tamina has gotten some credibility by then, she would be the perfect person to feed in a debut.