Ok, first things first, if for some reason you can already do this, then disregard...
Ok, I hope that Nintendo updates the firmware on the Wii to do the following:
1. Transfer the data from my gamecube memory card to the Wii's internal memory.
2. Be compatible with the classic controler
3. A way to manage you friends from the system seteup menu
4. Notifications of when your registered friends are online, or a way to tell.
Other updates that I don't see happening but would like:
1. Support for streaming information off of my Mac (With some extra software my 360 does this

We'll I can't think of anything else at the moment right now, so I'll just post