lol, u r my hero! its helped me alot, i search in alot of places for one solution, and now im playing mario kart wii and smash bros NTSC-U in my Wii JAP! tyvm!
if they get permission from 4j (the studio who helped put minecraft on consoles), they could put the console edition tutorial worlds in the game, as seeds
and i mean all of them (if not, maybe a few highlights, like TU1, TU31, and TU69)