Based on a little interest in another forum post for this game, I went ahead and founded a MiiVerse community for Giant Bomb users who are having a go at Wii Fit U. It's region locked to NA (not sure if South America is included) so there might need to be an EU/AU gym at some point as well.
GB Windjammers: 6927-9904-9111
Who knows what sort of nonsense might be spawned from this? Guess you'll have to join up (and eventually find yourself a Wii Fit Meter) to find out! Let's do this thing!