#3 Dean Ambrose
To be honest, Dean Ambrose does everything to make his storylines the best and that's just one of the many reasons why Dean Ambrose is on this list.
For starters, both Rousey and Ambrose let off the same vibe. They both seem like a couple of badasses who just wanna get into the ring and 'kick some a**', and if that isn't reason enough then I don't know what is.
Realistically speaking though, it is a bit of a stretch. Both Rousey and Ambrose have nothing in common apart from the hard work and intensity they show in the ring. Say what you want about Ambrose, but the man's commitment to the business in top-notch, and when you have two individuals who love wrestling and combat as much as these two, it would make for one hell of a match.
Rousey could even find herself in an angle with Renee Young, possibly if she were a heel. This could prompt a decent storyline. However, most people would tune in just to see these badasses duke it out. Not to mention they both look cool in leather jackets.