I would love to have more way to spend money in late game. the gardening mechanic is very cool, its always nice to have more thing to do in the hotel. I would love way more gestion (but its just because i like those kind of games so don't mind this feedback :p) Random little chat scene with the girls when navigating the hotel could be very nice. I also would like more personal non slutty info on girl menu (like height,weight,mensuration,state of mood...ect..ect)
On the sexy part, i would like that we have more tier of girl's slutty trait because only have to do 10 time butt stuff or blowjob seems little (for certain people) to be a pro at it and maybe having more difference between the girl for how much time they need to perform it. and finaly it would be cool to have watersport scene outside the donjon (maybe skipable for those who dont like that...)
Also i have readed most of my fellow comment and i agree with their idea, since you build your world and your character with passion, it make it interresting and we all want to have more of it :) and not only sexy stuff !! It's extremly rare for me with VN but your storytelling touch me (especially Lin and Ashley's story) and i'm sure i'm not the only one. I hope some of my feedback will be usefull, i wish you good holiday season.
Take care