Hi everyone. I've been following this game for a while, but haven't really participated in the forum up until now. I just happened to look over a few older posts and saw some anger over the MC's attitude to having sex with the girls.
Maybe you like pure fantasy, where a father can be dominant, and aggressive with his daughters, and not care about societal stigmas, and just power through any issues the girls have with being with him, and just have it be a bangfest. That's cool. I don't hate those games either. You like what you like.
However, this is not that game, and I can't really see it ever being that game. I feel like the struggle the MC has over his paternal instincts, and societal views of incest is moving. I feel like the girls are corrupting *him*, and I find that fun. I enjoy the way that they want the MC so much that they're willing to chip slowly away at his mental armour until he's seduced into giving them what they want/need from him.
He's not a wimp, he's not a beta or omega male, and he's shown a few times by now that he can be dominant in the bedroom. He's just a guy who actually has somewhat standard family values, and doesn't feel right about letting them go. He has the hardest time with Abigail, because she's the one he's most seen as his daughter, and on top of that, he's got hangups about what he thinks her mother would've wanted - and he's pretty damn sure she wouldn't have wanted him "violating" her daughter, no matter what Abby wants.
It makes the story more touching, it feels more like there's an actual parental bond between the characters, and ultimately (for me) makes everything better in the end.
Clearly I am not alone in this feeling, just as those who wish the MC were less hung up on standard morality are likely not alone. The difference, however, is that the VN has been written with the MC this way from the beginning, and changing it now would indeed hurt the integrity of the story, or require a massive rewrite, both of which are likely to upset current fans of how it's being done. That's a big risk to take, for the potential for new fans to take the place of the old.