Originally tacked onto another thread: Hyperlink here

Overview: Add an option to only display tag changes that included something that was undone (black + or -).
Usefulness: I frequently find out much too late to report vandals that they waited until my tag edit was well buried in my own history to undo or remove it, this would let me search for my own edits and see if they were fair changes or acts of vandalism.
Affected pages: Post Tag History