The problem is he didn't even once marketing the game to be something like that.He just say he will make the best incest game.And if you don't know that can't be done with only watching Eric having sex with every girl in the game.He should from the start promote the game to be the best voyeuristic game.Obviously he didn't want to do that because there is not enought money in that target group.So he just lie to both type of fans.
Yeah, it was advertised as incest, but DS himself admitted he doesn't get the incest fetish. So his idea of incest was to turn it into a NTR-ish game where you watched Eric fuck your family, or cut deals with him to get his sloppy seconds. When the entire Eric thing pissed off the majority of people, he altered course, but still couldn't wrap his head around the incest fetish, so made it a game where Max schemed to make family members do sexual things with him, or other people made them do those things with you. There wasn't much if any honest seduction or romance for those that wanted it, and the game kept going back into blackmail and domination themes again and again.
Update .13 was very promising, because we finally got Ann, and there was some honest lust and maybe even some affection there. There was still the specter of Alice's control, and Lisa subbing to her sister, repeating the theme of the family following everyone but Max. I think there was still a good update or two left in the game, but on the other hand, I have no real desire to follow up any of the loose ends with all of the side-characters. Now that I've had Ann, all I really want is Lisa to make my life complete.