Cool.
On the more steamy side of things, did you see what I asked about hermaphrodite spirits?
Related to that, some good potential additions could be a version of the second penis option with a knot (since the second one, that Sean has, already looks so much like a canine penis), and a canine vulva for female spirits as a counterpart, if you decide customizations ‘below the belt’ would apply to more than just males.