Clever, cute, and fun. Primary critique isn't even really a critique as much a note: Not every game needs to have longevity, and I think this game works best as a short clever concept. But in terms of replay value or the potential of scoping this into a long term game, I don't see many options for this game.
So I wouldn't even describe this as a flaw in this game, just a consequence of the concept.
Had fun though, loved your playfulness, and always appreciate another solo dev