I think it will do well in Europe just as brain trainning did as long as it's priced right.
I know my mum and sister both loved the idea of wii fit, they were disappointed to learn that it's not coming out here for a few months, they are not gamers or health freaks.
I see it selling very well, but I don't think many people will use it that often.
I fully agree it should be packaged with the Wii at some point and Nintendo should make a couple of very good games that use it and try to get more 3rd parties to use it.
You know what would REALLY make the wiiboard take off? WiiWare games. Fun simple but addictive games, they can produce lots of them and it wouldn't cost much.
After a year or so take the 5 best WiiWare WiiBoard titles, put them on a DVD and package them with the WiiBoard
"..just keep on trying 'till you run out of cake"
