Pedantic-age here, but, I think this should say 'wii-like wand controls' instead
The wiimote is great for pointing and gives an unambiguous answer for that every time, but for general motion control, isn't actually all that good. The data isn't very reliable and it's difficult to really figure out what's being done with the controller. So the use-cases as you mention tend to fall into a fairly familiar/limited set, beyond pointing. That's if we talk about the wii-mote on its own. Motion+ improves things further in terms of the use-case of more general motion tracking.
The wiimote, the original wiimote, didn't exhaust or exemplify what's possible with a 'wand-like' controller - precisely because of accuracy issues. I think the beauty of an exemplerary implementation of such a controller is if it can give you an accurate, unambiguous read or mapping of what the hand is doing, with fast action triggers via buttons. The wii-mote, in its original incarnation at least, didn't really offer that. Accuracy and temporal stability of results can make a big difference, and big difference to the 'set of actions' that can be facilitated by a controller.
So holding out the wiimote and saying 'look, accuracy ain't all that if the range of accomodated actions isn't so wide' is kind of a contradiction in itself...it's because of its inaccuracy and difficulty of parsing motion unambiguously that devs stuck to a narrower set of actions that were easy to get working well.