Maybe I'm being overly cautious, but I'm kind of worried about the virtual console experience on the Wii U, and I'll definitely hang on to my Wii for a while after launch. We don't know very much about the Wii U and how it will present virtual console content. Will it look and sound as good as it does on the Wii? Part of the Wii's strength in terms of VC is the fact that it isn't an HD console and natively displays at 480. Will VC still look as good on our HDTV's as they do now? How will VC games be affected when the Wii U displays at 720 or 1080? Will it scale up the sprites? And if so, just how crappy will that look?
I'm sure Nintendo will say that VC will look fine on the Wii U, but after being spoiled by just how good VC games, especially SNES, look on the Wii, I will be very hesitant to unplug my little white box and replace it it with...okay, well, another white box, but you get my point.