Looks fine to me, I see no down turns there at all. Lugging around a Wii, wont be that hard if you want to bring your games along with you. Nintendo has done this to prevent illegal sales of their VC games on say ebay, or other types of systems. Its a smart move in terms of marketing. I also like the fact once you download a game, even if you loose it, you'll still be able to download it again for free, that is also awesome.
VC is going to be an amazing tool, and I think I look forward to that just as much as I do the Wii itself.