The problem with women's MMA is particularly that with Dana White attitude towards it, it's stuck in some kind of viscous circle. White personally obviously doesn't like women's MMA too much, probably out of a macho mindset. He is a business man though and would promote it if the talent pool was deeper and it brought the cash numbers. But here is the problem, for the talent pool to get deeper and bringing more cash women's MMA needs more exposure so it gets known and starts interest in women to start fighting professionally, but it doesn't get that exposure, because the talent pool isn't deep enough and it doesn't bring the cash. It's the same as with men's MMA in the beginning, it needs someone to build it up. It probably will never get nearly as big as men's MMA, but it definitely could get much bigger than it is now with good promotion.
Pretty and legit?
Pretty and legit, but has the problem to be not an American.
I agree with Toxic that the Olympic Judo background of Rousey could definitely help the credibility of the skill level of women's MMA in the eye of average people.