Yes. They'll be a little more difficult since [aside from Kakyuu] they dont have princess forms, so I'll have to make up dresses, lol. I'm currently working on human Luna, shes almost done =]
Have you also seen these?: delight046.deviantart.com/gall… -- You're not the only who'd have come-up with dresses for the Asteroid Senshi and the Sailor Star-Lights. Good Luck!