I'm anxiously awaiting support for using dumps from the HD Wii U version since that's what I have in my own collection(and dumping on the Wii U is remarkably easy with the built in browser.)
That's unlikely to happen any time soon, to the best of my knowledge the files between the two are largely different enough to prevent it. The Wii version is a Maybe.
Curious how this is different from a generalized emulator. Wouldn't this be able to run any GC game that used the same registers as Twilight Princess?