Honestly, I like some of the ideas in here, but the ages kind of squick me out. Moreover they don't really make sense. While I think training Hinata with Genjutsu is awesome, and I absolutely LOVE the idea of Hinata training her daughters to be loyal Kumo broodewhores, I don't really see the rest of it panning out. Even though it might be possible for her to get pregnant, the pregnancy would be almost impossible without serous medical intervention, and may actually have a negative impact on her ability to have children in the future. Plus, who would the Raikage rather have sex with, a scrawny little girl, or a milky-breasted, wide-hipped, totally-in-heat 16-18 year old?
I am not tre OP or the writer, so feel free to ignore me completely, but I just wanted to say that.
Also, if Hinata is capturing girls from Konoha, I vote Naruko. The Raikage gets some Uzimaki AND Namikaze stock AND gets back at Minato at the same time.