I mean, if there's something in the works already, I'd rather wait (or pay) for someone better than I to write it up. But if nobody else is gonna do it...Actually there's already code support for genital locations and while I don't think you can change them yet outside of save editing, it's probably going to be TFable in the future. I know some scenes also have variations depending on your genital location as well.
Unfortunately this is obviously even less supported than Taur content, so we're back to the issue of someone has to write it.