It strikes me that this is exactly the kind of feature that will be achieved by the homebrew community, as opposed to Nintendo themselves.
Literally the opposite of what happens. That's like saying the homebrew community should be able to get wiimote/nunchucks to work with GC games. Only Nintendo can make this possible.
That's one example. I was being more general, in terms of the community regularly making adding features via homebrew.
Besides that, there's no tangible benefit in trying to get wiimote/nunchuks working with GC games so noone would waste their time on trying to make it happen (just like nobody bothered trying to get a gba emulator working on the DS for years). There is a clear and real benefit to getting a Wii game running on the gamepad, at the very least moreso than getting wiimote working with GC games. So in short, no, probably not 'literally the opposite'.