Why does Nintendo need to do anything with WM+? They are still bundling it with any game that uses it. That's enough. If people aren't running out like crazy to get WM+ it shows it's just not that important to the masses to have true 1:1. And these are the masses that bought a console for the motion control in the first place.
Not a good sign for Sony with their tacked on expensive 1:1 controller with limited game support.
As for Natal? Lord knows.