Time is money. An UPLOAD feature would save lots of time for existing MiniDisc users, encourage more people to take up the format, and generate lots of money for Sony!
An UPLOAD feature, as proposed, could be a solution to the most annoying aspect of the MiniDisc format: Digital copying causes all track marks to shift back in time by 1 to 3 frames, so that the very last part of the previous track is moved and becomes the start of the current track.
I am not convinced that the current NetMD system (without UPLOAD) will allow a user to create a backup of their (potentially very large) NetMD music database and re-install it on a new PC if the original PC is stolen or suffers a hard drive failure, but:
An UPLOAD feature, as proposed, would also provide an easy method of creating a safe backup without further infringment of copyright (I, like many other users, have a large collection of irreplacable recordings held on MiniDisc. My collection was created over many years using a standard ATRAC portable MD recorder and it includes: bird song, lecture notes, the musical talent of my kids, sound pressure level tests, and homemade unique MiniDisc tracks to control animated displays at a theme park. I have even used voice-activated record mode to locate the very elusive deathwatch-beetle!).
The MiniDisc format is excellent in all other respects. Thank you.