BD Free user can restore quarantined files manually - there are no alerts - as you know. User can also send file back to quarantine.Auto restore isn't the same as "we detected this file, what do you want to do with it?" Every AV has the ability to restore quarantined files. Not all of them do that efficiently. For example, you restore something from quarantine on McAfee, it just deletes it again. What's the point?
Efficient - definitely not... a bit of a rigmarole if you ask me.
Plus, I found that BD Free permanently deleted files rated as malicious during its installation scan... with no way to recover them.
As I said, I dropped BD Free due to such problems.