It would be great to be able to send an email to the person uploading a file.
I believe that adding the line: $users_email = $user->get('email'); to give this:
// Get current logged in user
$user =& JFactory::getUser();
$usr_id = $user->get('id');
$usr_name = $user->get('username');
$users_name = $user->get('name')." (".$usr_name.")";
$users_email = $user->get('email');
would take me some way there but I don't know enough to take the implementation further even in theory! Equally its your hard work that I have the 'cheek' to want to improve so I wondered if you'd find the time to implement the 'feature' - I'm sure that it wold be much appreciated?