#4 Nia Jax winning the Battle Royal

Why is WWE already doing this feud again?
Why would WWE have Nia Jax win the Battle Royal at Evolution when she has already tried and failed to unseat Ronda Rousey as champion. Maybe the decision was due to the WWE's belief that there aren't a lot of realistic opponents for Rousey, but that argument falls flat when you consider that Tamina Snuka would have been a fresh new opponent for Rousey.
Female superstar says she inspired John Cena turning heel HERE
Furthermore, WWE could have just as easily chosen to give the win to a SmackDown Live women's Superstar, which would have made a lot more sense than just giving Nia Jax another title shot. Of course, some will argue that Rousey and Jax have unfinished business, especially since their match didn't end clean, but it still doesn't justify doing it again!