Along the lines of posable mutations such as Primal Fangs, OG claws, tongue, and teeth, I was thinking that perhaps a few others could be added into the mix. While there are some I'd definitely agree with not being posable, here are some mutations that I thought would not add too much of an art change.

-Tailless
-Folded ears
-Bobbed tail
-Eyeless

Please let me know if these would be too much of a hassle! I am not a LD artist myself and therefore I am not the one to speak, however I would love to hear your word on it.