If mods delete a thread, it should be practice for them to PM the user as to why they thread was deleted. And a user should have the right to appeal the deletion.
We delete quite a lot of threads on a daily basis, Joe. Your suggestions would be pretty difficult for us to consistently put into practice, without burning a hole in our brains.. Some threads are closed with a short explanation, but this particular one was regarding a banned user and activities outside the forum. We don't mind discussing it with you if you pop us a PM, as you know.
As I told you before, if any user breaks violation of privacy or harassment rules on this forum, they won't go unpunished, since these are very serious accusations. When the time comes, we'll see what's going on.