I think a Samurai Warrior character would have more luck considering the recent release of Sengoku Musou 4. I'd be for it. I wouldn't mind Nouhime becoming playable in DOA hahaha.
They'll eventually need a bare-handed fighting style, kinda like the same treatment given to Momiji and Rachel because they always wield weapons. Like FatalxInnocence though, I'd prefer a Samurai Warrior character, probably Ranmaru Mori.