Hey Ryan,
What a great idea!
Much like interchangable faceplates for your mobile phone - but not entirely. I like the idea.
If someone can write a program, like the ones you use to print lables on cdr discs, but specifically for the Nano clones (or just MPx players in generally), that would be cool.
I know people have asked about faceplates for this, though there isn't any, at this is is getting close to it
.