Below is the current modal that appears when deleting a user.
I would feel a lot better if the name of the user I am about to delete appeared in the modal (preferably in bold). I am always worried that I might have mis-clicked the wrong user etc. It would be terrible to delete a user and all their passwords, losing them forever.
Admin edit: split second story to As an admin deleting a user I need to enter the email of the user i'm about to delete as confirmation