As far as I'm concerned, more Xenoblade Chronicles is never a bad thing, no matter what system it's on. Provided it runs properly, having the ability to play this title on a handheld could be very beneficial -- I certainly know that it would have come in handy when I was glued in front of my TV for 150 hours playing the Wii version.
But don't worry, folks, this probably won't even be released in North America -- at least, not without a big campaign push. #OPERATIONRAINFALLPART2