Woman's MMA ends up with some helpless woman fighter not ready for that level turtling up and getting beat on by a more advanced fighter.
Sure if given the chance they could evolve and formulate like 1 good division in 5 years. But as of right now WMMA has nothing to offer other than Rousey armbaring everyone.
I guess you could sign Ronda and give contenders a 1 fight contract and have like 3 women's fights a year with Ronda in each one of them.
I can only see this move right now as an appeasement for Rousey. Like a Dana trying to court Rousey move.