[Koha] User Annihilation Deterent!

Is there any way currently for a library db admin to simply disable user deletion.. or to prompt librarian with something like "Do you really want to do this?" first? If not - does anyone think this is worth putting on a TODO list for future consideration? If so,and going one step further, is it worth adding something like a systempreferences option to display 'warning.msg' prior to any deletion procedure? Personally, I never make those kind of mistakes, but you know what some librarians are like! <grin> R.