Here's an interesting Animal Crossing idea: I always wondered where the villagers that own shops and generally have jobs go when the places close, if they do at all. Isabell, for example, basically seems to live in the City Hall, but Tom Nook clearly closes his store. What if, after the stores close, we see those villagers leave the shopping district and wander the town, go home, do other activities like other villagers? Maybe if it's a 24/7 job, like it is for Isabell, there could be shifts and there could be another assistant to take her place at night, that way you can interact with both characters at various times of the day. They already kind of do the shifts thing with the Nookling Store and the post-office (I think), but we never see them anywhere other than in their buildings! This is somewhat inspired by a dream I had where I was speaking to Tom Nook at his house. I just realized, they don't really go home, they just kind of cease to exist overnight until they open the next day!