Problem 3 will never be solved as long as the two moms and the sister are in the game. Even if he stops with the teasing scenes, people like incest and will keep asking for it.
The black box stuff is just weird. I don't get the whole faceless mc thing. Maybe it has something to do with immersion and making it easier for the player to feel like he is the mc. But it ends up just making those scenes look really weird.
Yes, people will always ask for whatever their kink is, but, there are things you can do to minimize that desire/type of post. First off, make it clear from the outset that whatever it is(incest, loli, etc) will not occur in the game. Second, if you aren't going to do it, don't tease it. Third, write the character so that the intrest is removed. For example, if there's never going to be anything with the sister, then write the story in such a way that the player feels protective of her and ceases to even see her as anything other than someone they need to keep safe, never objectify them(don't dress them like a slut if they aren't available), make them precious. Some people will still ask to sleep with her, sure, but if most people know its not going to happen, and feel protective of the character, then the dev won't ever have to even respond to posts about incest because the other players will do it for him.
