I know right, when I go to the stores here in Ohio, they sell only figurines of the Anime, the cards, and the games, that's it really, and what plush dolls they have are all of the current Gen's starters and other Pokemon nobody really cares about. I had to buy my Mienshao keychain plush off of Amazon because of it.A lot of Pokemon stuff from Japan never gets released outside of it, such as the arcade games (I've seen a Gen IV based arcade in Taiwan though...). Some of it I really would love to see on shelves or at least have it in the Nintendo World.
I would love to go on a shopping spree in Japan and get ALL THE [LUGIA] FIGURES AND PLUSHES.
Pokemon Rumble U does this as well, so that's even less reason for it to be localized.The closest you're ever going to get to Pokemon Tretta in the west is Skylanders, which isn't a Pokemon game, has completely different game-play aspects, and is on home consoles, but it does rely on physical objects (in this case, figurines as opposed to pucks), so it's at least close. If Tretta was retooled to be on consoles to make it more Skylanders-esque, it would probably have a market in the west, but for now, we shouldn't keep your hopes up on Tretta and anything related to it coming to the west, and instead keep our hopes up for the coming 6th Generation.