Dock?
What if they made the dock so you can have a audio output from the dock instead of plugging it in on the top.
This would be a pretty convenient, and cleaner way of plugging in the iPod to your stereo plus they can sell this with a cheaper wall wart that plugs into the dock for charging and sell the expensive white power adapter separately.
Or, while we are speculating, having a optional IR remote for the dock or even a video out for future capabilities but starting with song info and basically duplicating the info on the iPod itself for viewing on a tv or monitor.
I know that this is possible without adding too much to the price.
Bluetooth would probably not be cost effective but it too is also possible.
Tivo series 2 recorders can connect with Rendezvous and is compatible with iTunes and iPhoto so, I am kind of curious to see where this might be going.
The possibilities are endless.