My friendly apple pals answered this today for those of you that care, and the picture is how to do it with Profile manager…
how do we disable airdrop.
System-wide:
defaults write /Library/Preferences/com.apple.NetworkBrowser DisableAirDrop -bool YES
User-specific (via preferences): defaults write /Users/jdoe/Library/Preferences/com.apple.NetworkBrowser DisableAirDrop -bool YES
User-specific (via MCX): dscl . mcxset /Users/jdoe com.apple.NetworkBroswer DisableAirDrop always -bool TRUE
