Yup. We all want that. Releasing a new DOAX3 game without the new VV girls, and all the DOA5 girls (sans the VF girls, Mai, and Naotora, and Phase-4) is a wasted opportunity.
Indeed, the girl's name is an obvious indicator of her nationality. :D
I wish previous buyers of DLCs in DOA5 will get those "revival" DLCs in DOA6 for free, or at least at a discount. But we know it will only happen in an alternate universe. :p