I think I see something here, there is something similarly made, called Chub Chomp Chill and it is more of the customize, buy, and give system Tomodachi Life has, I can see this as a different project than that, though it would have to be more of the smaller gameplay style, like custom clothes, interiors, playing minigames, and fixing problems.
But that was an over extended rant on something that I could see, and something you can use as leverage to make a stand out title.