Would Xenoblade be a good fit on the 3DS?
That might be easier to play but this game is so huge I'd prefer it on my big screen to be honest
as for waggles in platformers.. I'm really starting to think everyone here sucks at platformers or I'm just super excellent at them, because I've never once had a trouble with motion controls in either NSMBW (or WU) and DKCR. I played through some of the speed challenges too, both games, no problem.
In fact in any motion based Wii game, the only times I accidentally waggle when, for example, scratching my nose, is when.. well I was already in a safe zone and not in the middle of a game. So no, I've never triggered motion controls and had it ruin a game experience.