While these content you metioned sounds great, it falls outside the scope of this project, which already expanded beyond it's initla scope several times already.
But, we are aiming to add all the content we wanted to add but couldn't, with the sequel. While nothing is set in stone yet, second game is going to be more like a metroidvania in term of gameplay and include some sort of progression for player and the girls. We didn't invest too much in this project but we are going to invest more in the sequel. But I'm pretty sure we are not going to follow any IAP/MTX model.
Thanks for your comment, I'm glad to hear your liked our game and thanks for the suggestions.
wow it sounds great, I don't know if there are several people in the project or if you are independent but the way you propose the sequel is going to be fine. You have my support and I hope to hear back soon. One last thing, I don't know if the project has already been started or not but do you plan to do that it is paid with a demo or will it be completely free?