Speaking of Kui-Tan, would we be able to get some testicle-based skills in the game. I don't mean teasing, though. I'm guessing, judging by the raccoon and tanuki comparisons, that you were modeling off the tanuki of Earth. While the actual species has surprisingly large testicles for its body, any special skills based on them are entirely made up. In Japanese lore, the tanuki's testicles were literally used in a variety of ways. They were often transformed or molded into various things, such as a tarp to collect rain or a club to beat back enemies.
Since we already have ant venom attacks and other body-part-related special skills, would it be all that difficult to code in combat abilities for a Kui-tan's testicles?
Oh, and to answer the question: I usually pick human because I make the person futa, and I wanted a human-style penis. Now with the dong designer, I'm thinking I might go kaith for the twin tail and then use the designer to get a non-feline penis. But, then I started getting a cunt tail and that will get rid of the cat tail...argh too many decisions...