i think linking a folder to a playlist is much better, and efficient than seeing all the videos in the library.
Having both would be good.
Linking a folder means each time a new video is copied to that folder, it will be in the play list + a star mark next to the play list.. means a new unwatched video is there.
it's good also if we can link home "shared" folders, so if any one in the home\work added a video in a folder you care about its content... it'll be updated + a new unwatched video Star.
Thanks