It would be great to receive a reminder when the website authentication key is due for renewal, I had an internal company site that is used quite heavily within the firm down for just under a week because of this with no indication as to what the cause was, After checking all of the site settings and scouring my code for errors a simple refresh of the authentication key was all that was required. A lot of hassle for a tiny problem.

Either an email reminder to the owner or a notification when editing the site to say that the key needs to be renewed would be great