#1. Carmella

Carmella is a special talent in WWE's women's division and there's a reason why she was chosen to win the first ever Women's Money in the Bank match (and the second). There's a reason why she cashed her briefcase in against Charlotte to become SmackDown Women's Champion.
Sure, the spotlight on SmackDown at the moment seems to be surrounding the will-they-won't-they-turn-on-each-other relationship between Sasha Banks and Bayley and the SmackDown Women's Championship and I fully appreciate that everyone can't be on top all of the time.
A lot of people didn't like Carmella's WWE SmackDown Title reign and her relationship with James Ellsworth, but I would argue that as a heel she did her job perfectly. She has always been an incredibly consistent character onscreen, as evidenced by her pairing with R-Truth and the WWE 24/7 Title escapades.
I'd shoot Carmella back up to the top by having her return to her heelish roots and launch a campaign of terror against the rest of the SmackDown roster. Perhaps she aligns herself with some NXT women like Aliyah, I think the two would be a good fit for each other.