Since it's now been 5 years since the subject was last broached...
Has any progress been made with regards to getting the adapter working with Wii games in WiiU's vWii mode (aside from nintendon't)?
Irrelevant flavor/context incoming:
Family reunion last weekend and we got caught up revisiting some childhood classics but there's a bunch of Wii stuff we used to play that's GC controller compatible and has inferior and/or waggle-infested button mappings when using Wiimotes (like Grim Adventures of Billy and Mandy, which is pretty fun with GC controllers but sucks swamp-ass with Wiimote+Nunchuck) but I've since sold my Wii so I'd like to get stuff working on the WiiU if at all possible... otherwise I'll just get a Wii and copy over the relevant game saves (would appreciate a point in the right direction regarding software for such purposes, btw).
Anyone?