It would be nice to see some smaller interactions when running into the girls around the hotel that aren't either them just standing around or furiously masturbating. Some random day-to-day smaller interactions like a short conversation about food, weather, video games or similar. Maybe a passing peck on the cheek to/from someone just coming into or leaving the room you're in, small conversations between the girls and things like that.
Its the biggest opportunity for improvement. Dressing up around the hotel should be a very intimate thing between the girl and the MC, even if their true motivation is selfish. There should always be some acknowledgement between the character and the MC that they're wearing something different in public.
Perhaps the easiest place to put that text would be during the clothing-change conversation in their room. They could talk about 'how you see me' and 'what I feel when I wear this.' And then there would be a clarification text, that repeats the same idea when you talk to them outside their room.
Nudity in the hotel always felt like a premature escalation (a little joke) of their situation, since it affects all the girls. It should be something they all discuss together once everyone has a partial exhibition training, and everyone can express, with their own personality, about what they feel about various types of clothes around the hotel.