I am not seeing it through the lens of how fucked up it is, but rather if it makes any sense. I love hot moms as much as the next person, but it just seems ridiculous to me that a woman would want her husband to fuck her mom, no matter how hot her mom is. And also, consider that she's pretty deep in this whole NTS thing that she's doing to please her husband. So it's like, I'm going so far as to fuck other dudes just to please you, you were totally happy with it, and now that's not enough for you? I feel like him fucking other women directly conflicts with the whole NTS dynamic.Well, the dude gets off on the idea of his wife fucking other men. Why does Amelia getting off to her man fucking her mom is somehow more fucked up? This kind of thing, even if it happens just once in this game, would be the literal blessing. We will 100% have Amelia fucking more then 1 person at once, so MC having a threesome with his wife and her mother is more than fair ( and is one of the hottest things that could happen, at least for me)
(I would pile on the argument and say that with how proud Amelia is, she would feel hurt if she felt she was not enough to please her husband, but I've been wrong on how Saxxy views her character, and it could well be that he thinks she would not care. Shrug.)
I guess plenty of people here are fine with this becoming some weird orgy game. Personally, I don't think it's as hot as just the basic NTS dynamic of the husband and wife and the bull, and it would just make the story goofy and even more unfocused. It would also stop being a game about NTS.