I voted filmation as did most everyone else.
But I agree with some of the others that what I really want is the Filmation Base, with perhaps MYP Dagger or hints.
Basically a Filmation heavy combo of the two. To me like Mattel, her design is basically a "Stylized" version of Filmation in MYP appearance, so there isnt much issue either way.
I'd prefer a Red Headgear like Filmation, though I like the cut of her clothes a bit better in MYP. I like her face more in Filmation.
It's really a non issue, as this character is great either way. But make it like they've made many MYP characters with a Filmation or vintage origin: Vintage basic with some few good MYP Details.