3. Nikki Bella
Regardless of your personal opinions about the Divas Revolution, or even specifically the Bella Twins, theres no doubting that Nikki Bella was the star of the WWE Divas division in 2015. Now it seems like a neck injury may keep her out of the ring for months, and if surgery is deemed necessary, will certainly keep her off the WrestleMania card. While Charlotte and Becky Lynch are putting on quality matches in their current feud, the women's division is currently missing its previous Divas champ. Nikki Bella was the entire focus of the Diva's division for pretty much all of 2015. Having her just disappear from the scene definitely leaves a big hole that just cant be filled by anyone else quite yet. WWE has no one but themselves to blame. When you book an entire division around a single individual for as long as they did, you risk losing everything when that person is no longer able to carry the division or hand over the reigns to a successor. Which, ironically enough, brings us to...