Hello! I love the game so far! I don't know how deep or interesting you want your game to be, but I love games that make you think and that are more than just sex. The puzzles with the mushrooms and the Studying Quizzes were fun and great additions! I'm also interested in the "who's the infiltrator" angle of the story. It would be interesting to see a couple of "red herring" plot points like Luna practicing a spell she shouldn't be, or finding Dominique doing something suspicious. I also love the date with Luna! Can't wait to learn more about the other girls.
Other than that, it would also be cool to meet other character's off campus. Like visiting one of the girl's home in another town and meeting their mom or sister.
More dialogue options would be great too. You guys are amazing for letting us customizing our characters, but giving us more options to speak our own opinions would be great too, like the warehouse with Dinna. Hopefully your choices will give you more relationship points as you develop the game more.
It would be cool if you also let the Slower/Faster buttons matter during sex somehow. Maybe putting in the character's preferences in the sex dialogue could give you more relationship points? If a character says "take me harder" and you go faster you get something, or if they say "be gentle" and you go slower. Something like that would be cool in the final version of the game.
And lastly, since I've edited this a lot, I found an inconsistency. If you talk to Ami at the start of Chapter 1 without talking to Luna, you get the Luna flashback asking about the embarrassing picture. It's a small thing, but it's definitely something to keep track of when you have interconnecting plot points like that, it really confused me and threw me off. I would make it so you can't talk to Ami on the roof without talking to Luna first. Same goes for the Tennis(?) scene with Maki. I chose to give her the potion instead of the other option so the dialogue before the replay scene really threw me off as well, though it's not as important as the Ami/Luna part.
Not sure when I'll revist this, but I wish you guys the best with this game!