I got the impression from your initial posting that you are re-implementing functionality that is already available in that patch and just wanted to make sure you don't overlook its existence. It would be a pity to spend that effort again instead of investing it into something useful. In fact it's a pity that it stayed there so long without getting applied.
To give an answer to your original question - I think that notifiying on new files and versions and deletion is sufficient. Sending emails on renaming, moves and new folders sounds like too much email to me too.
