Yeah, when you have DVD update all you need is a single DVD-RW and you're set forever.
Barring another SMG incident though I can't see what else drivechips will ever need to do, though. I've been using openwii for a couple years and it's been great, although it and YAOSM are the only two open-source projects still supported and AFAIK the devs for both chips have worked with each other to help keep each other's chips up to snuff.