If mezzmo tracked when each item was last played, we can create smart playlists that:
Show the last 10 videos that were played (kids always want to watch the same thing a few times)
Show what videos have not been viewed (would be enhanced with random sort feature: see below)

Also, add a option to sort a playlist randomly and you can have it reshuffle every time the library is maintained. If you want to limit this to smart/active playlists, then to recreate the same effect, add an option for smart/active playlists to limit its pool to a particular folder/subfolder.

Flatten folder playlist option so all files from subfolders appear in the root.

My Samsung LN52B750 TV will automatically play the next media in the same folder. This is annoying and I rather have an option to have it stop after each one. I don't know if this is a client or server feature, but can this be solved on the server-side? Perhaps add an option to playlist prevent continuous playback?