If this is an old topic, please forgive me. I did search and turned up nothing.
Top-scratched media is a problem sufficient for the makers (who set up the issue http://club.cdfreaks.com/images/smilies/4/angry.gif by making the reflective layer of media unprotected) of media to now offer “premium” media with some coatings.
It seems like it ought to be possible to spray- or spin-coat the top side with a catalyzed clear layer or to add to it a permanent-adhesed clear plastic film to get some protection to the irreparable and fragile top side.
Does this exist? I can’t be the only one who ever thought of it.