There's a few things i want that would make this even more incredible.
1. A possible story, I know we have knot city but something that could make the characters have certain text on what action you do and certain scene. like a full NTR path or sharing it would like more meaning to how you play and add replaying value.
2. Now this would fit well with option one, a map. Like ever thought of the idea of making knot city but maybe that out of the vision of the game but it would be cool if you can turn off desktop mode with a map or possible house hold objects spawn and add floors. could solve the actor spacing problems and trigger "weird noise" prompts, like bit find her doing it out.
3. mini games, for certain actions taken and just mini to play around with.
4 . add physics and fall damage.
5. Allow us to make them certain actions, like Talk, move here, sit here, ect.
*Problems, I found was sometimes the dialogue doesn't fit well.
Although it would be cool if you added all of these things, I really don't care its a great game.