I absolutely love the "easter egg" names you can have the girls call you, I just wish there were more of them for each girl, and that they changed a little more dialogue after the initial scene.
Also, Haruka is strangely okay with every single name other than her husband's name, I didn't expect that.
Unless Selebus dislikes futa and trans characters in games, I really hope he adds one of them, either a main girl or a side girl, as long as she's going to have lust scenes and is romanceable, and I don't think making it optional whether she's a futa, trans, or female is a good idea, because her story could probably revolve around her being different like that, pursuing her romantically or sexually should be optional though, but that is easily done through a choice after her introduction, probably with a vague reason from Sensei, as I doubt Selebus will actually give a proper warning aside from the tag added to the game.
I hope that once new scenes get added for the girls, none will instantly become missed because we saw a scene that locked that new scene if we see it before we should've, the game is pretty long, so I don't think many people would be okay with being forced to start over because of that.