As someone who used to play Corruptiosn of Champions back in the day, I am kinda supprised how limited some of the customization options in S4P are, particularly when it comes to genitals. So, basicly as a proof of concept mod, I added more shape options to the lab:
avian (aka bird), bovine, demonic, draconic, gooey, insectile (because spiders needed something), reptilian and tentacle
Should not affect anything outside the lab/sex scenes, new NPCs will still be generated with the default options.
Oh, and if you use the "grow a penis" option in the lab, it shouldnt force a human penis anymore and rather use whatever type that NPC has in its settings.
https://mega.nz/file/dIUSRR5J#3Wihn77w7zqRqCo84mRO0OBQ3hy5WLLR5iUc2fe6bXY