Expiration Date field for videos

Has anyone ever suggested to add a field to the details of a video to hold an expiration date of a video? One of the most difficult things to do is to manage the growing library of videos on our account. To help, certain videos which I know are only good for a certain period of time, I add to the end of the filename "Expires 2023-12-31" (as an example). In that way I can run a search for things that are expired and delete those videos. Although for my purposes adding an expiration date to a filename works fine, it can become confusing to others who I send a link to. Since they see "expires xx" date in the filename above the video I sometimes get questions about it why it says that. It would really be nice to have an expiration date field in the details so I could search on that to achieve the same thing, without needing to put the expiration date in the filename itself.