Finally, how do you think the gender, sexuality and species of each character informs or is informed by the fact of it being an avatar?

I'm not sure. I mean, the effectiveness of my avatars doesn't seem bound by any of these factors. Hence, Jimmy DeSade, Salmagundi Desvernine, Narcissa Snow, Dead Girl, Gin Percel, and Nar'eth. It only matters that they can contain some fragment of me with needs containing and expressing. I might not have understood your question.