Had a chance to play through 4.0, it seemed a bit shorter than the last couple but that may've just been my impression. Pretty sure I completed all new scenes, but
Cokane0 some sort of tracker to indicate at a glance which content remains unseen that is accessible from bedroom (laptop, phone, magic spell, etc.) is starting to be missed a bit w/ the expanding scope and complexity of the narrative. Doesn't need to be very complex, but it's a PITA clicking through every girl/location and still not being sure I got everything. Like even just a list w/ fractions for each character's scenes completed over total (e.g. Aya 4/6, Neko 5/8, Inux 2/3, etc.) would be a huge QOL improvement.
Uhhh... there was something else I was going to mention that stuck out to me, but it's slipping my mind. I'mma go look back through the scenes & see if it comes to me... Oh, and a proper scene gallery for the non-repeatable & story events would always be nice, but I'm in the habit of making my own ghetto saved game scene galleries when needed (queue "back in my day..." rant)