Definitely want to see more Vanae stuff. I'm actually considering writing up a Vanae follower but am unsure how/if it would fit with what we know about Vanae, especially given that she'd be a herm.
Unless that Vanae gained a dick from hanging out with spacers and their mods, there shouldn't be any cock-wielding Vanae since all their males died out. I mean its the whole reason they kidnap males from other species in other to breed (and eat).
Though if you go the route of her having gotten a mod that makes her grow a dick, you could make it so that she did it because she wanted to help feed her sisters or her tribe was running low on mates. Hell maybe she got it because her species obsession with dick extended to wanting one for her self, so its her fetish so to speak.