5. Nikki Bella
Say what you will about The Bella Twins, but Nikki Bella has come on leaps and bounds over the past couple of years. She's still nowhere near being on the same level as the majority of NXT's finest Divas, but her recent matches with Charlotte at least proved she can hold her own with them. Given that Nikki has established herself as something of a powerhouse, her squaring up to Ronda Rousey could definitely work. Like her or not, Nikki does come across as a threat in the ring, and could very easily and believably give Rousey a strong first opponent in the WWE. For this to work, it might be best to keep Brie out of the equation in order to let Nikki stand out as a competitor in her own right rather than just one half of The Bella Twins, and so long as WWE Creative handle it in the right way, this is a match which could easily generate a big fight feel going into next year's WrestleMania. This bout would definitely be a weird one though. With the so-called "smarks" no doubt embracing the debuting Rousey, Nikki would likely still have the support of some fans (she was still getting decent pops in the build up to her matches with Charlotte despite being the heel, and those can't all be Total Divas viewers), but that could actually add an interesting dynamic. Could Nikki be the one to stand up and represent the Divas Division from this invading UFC talent? If WWE Creative were to put some work into telling that story, it could come together in a very awesome way.