i havent played mother 3, but someone i was close to for a very long time played it, and he told me a lot about the game! i have watched a full playthrough of a mother 3 / touhou parody called "touhou mother" though, which isnt the same ofc, but it gives some more context for what knowledge i do have. i also have fictives, but they don't talk much.
we do really want to play it someday though, tbh..