Well, there has been rumours about both C64, and Amiga Games would be available on VC. But yes, you are so right, when it comes to that part, since the music, and all that is like it sounded back on Amiga.
I don't believe the Wii could emulate an A1200 well enough to be worthwhile. The Amiga has a lot of custom chips inside it. Also, I doubt the C64 or Amiga games would appeal much outside of Europe, without the notalgia.