None of that, I'm actually only trying to point out some of the flaws in the game that would make games like these better. Reason being that this is not nearly the first time I've encountered this issue in these games, even some games I do really like have similar issues, like Timestamps for example. But just to respond to what you observed.
1. It really doesn't matter what I like but incest is one of my favorite tags, that does not mean it's the main part of the story, part of what makes good AVNs is the ability to separate the story from the romance, the story is the path MC walks, the romance is who he walks that path with, and should not be forced, those are two separate things. The romantic freedom in this game is very limited and genrally forced in my opinion, and by romantic I do not necessarily mean sexual. You're free to disagree.
2. I don't have a problem with the main LIs, Ruby's my 2nd favorite character, but I generally don't like the idea of a main and side girl, which again restricts the freedom of the player. That does not mean to make equal amount of content for dozen different characters, just a freedom of choice to walk your path with who you will even if that means less content.
3. Game choices in this game weren't good in the two playthroughs I played, from the story standpoint I can't tell if you can fail the game, but it didn't matter what choices I made with Emma I ended up succeeding my mission either way, and romantically I played Ruby's route twice with completely different choices to the exact same result, with literally no differences aside from maybe one mini dialogue that had no impact on the conversation even. I know it's only one route, but within that route no choices mattered, all you have to do is pick the route.
To finish off, I'm not trying to force anything, just observing some problems that can make games like these better, it's because I saw potential in the game that I wanted to post in the first place. You are free to like what you will. At this point I will see myself out for I have nothing more to add.