Thank you!
1st fetish "Breed/Impregnate": You might be onto something as next update will start the story and it is tied to this fetish (can't say much more rn).
2nd fetish "Succubi/Demon Chars.": The Devil Olivia is a representation of all her repressed sexual desires and feelings, leaning towards a personality of her she never really embraced, it is more to give a visual representation of her 'dark' side, we left it open for now as there is so much we could do for that succubi char., no clue on if others will be implemented yet but you never know! Your mechanics idea about how the stats could influence body physical traits is really interesting, I will have a word about this with our writer! Maybe the succubi will make it so that you lose stats in exchange for sex, I can't really speak up on this matter right now but I really like how what you brought up!
Take care travisz!