I too, am guilty of bumping a thread before I knew better (Don't tell Mousemonkey) and it is now clear why this isn't acceptable. Your reasons make sense.
A few years ago I also had a thread removed and I still don't know why but, I'm pretty sure it didn't violate any rules. It also wasn't antagonistic towards anyone in any manor.
So here's the thing, When I make a post I sometimes spend a considerable amount of time arranging my thoughts and checking facts. Many times links are provided to back up these thoughts and facts.
So as long as the post isn't just spam or purposely antagonistic, couldn't a link be created to the deleted post for a limited time (Along with the reason for deletion) so the member could salvage some of his (or her) hard work and research when deciding how to better word it.
That would be very helpful and much less offensive to those that may take it that way.
Just a thought that might help a great forum be even better.