Also, your Wii downloads can most certainly be moved. Nintendo has a replacement program where you send in your faulty console and get it repaired/replaced for free if you're still under warranty, or for a lower cost than a new system costs if you're not. I the system is replaced, all your purchased licenses will be transferred.
Says so right there on their website, and contacting customer service would've given you the same information. How come you didn't try that?
For instance, my fairly young 360 had a RROD years ago. The system's disc drive was in pristine shape that I sent in and I just had bought a 120 gig HD to upgrade it with and to play games off the HD when the RROD hit. The repaired unit from their replacement pool comes along and I started installing games and enjoying things just fine playing games off the hard drive. I noticed one or two installs failing but didn't think much about it (A failure on occasion when transferring 7 gigs or so of data didn't seem terribly strange) and restarting the process always worked so I didn't give it a second thought.
Then a couple of months later, I popped in a Xbox disc. It didn't take long playing a game directly from a disc before I realized this disc drive was in extremely poor shape and having serious issues correctly reading disc. That left me up the creek without a paddle since my system warranty was up other than for RROD and E74 errors and more than 30 days had gone buy since receipt of the repaired unit.
You avoid those unknowns if you're willing to spring for a new unit to replace one that is failing. And Nintendo doesn't provide a consumer wanting to do that with a way to transfer their WiiWare and Virtual Console games to the replacement.
That's the issue this thread is dealing with.