When I made the comment, I was thinking everything, but yeah, I can see how it would be difficult, I'd assume you would have to redraw all of the sprites and animations, but tables, beds, bookshelves, and all of the purely decorative furniture items would be nice. (I know beds aren't decorative.) Id also like to see a dedicated pause button at some point.
Iris, (the Tamer) and Riley, (the farmer) are the only ones I see ever actually leave their house and do something. but could they die randomly? I remember I was looking for Iris at one point and couldn't find her at all, or her pet, I assumed she died, only for her to be there the next morning. I only mention this because maybe its a bug? characters disappearing randomly for a whole day?