Ok, I tried to tackle the feature from another angle. I know PMS is cross platform, but maybe you can implement this for windows specifically (and macos and linux have the same features somewhere, I'm sure):
in windows you can search for files changed in the last 7 days: Win-F and enter datemodified:last week kind:=video in the search box. this search now you can save. It would be very cool, if PMS would recognize this "virtual folder" and crawl it to present it on the TV.