I think the sculpt looks terrific. And I'm not bothered by the mix of materials in the hair.
What is kind of bumping me thus far is her outer garment. It seems bulky and a bit formless. I'm sure it's a nightmare to tailor these tiny little things, but the real costume is much more form-fitting and detailed. As it stands, I would likely display her without that outer cloak in order to show off the cool leather bodice armor below.
That said, I have to remind myself that this is the prototype, so hopefully they'll tinker with it some more and get that outer cloak looking great before the figure gets released.