I also see YouTube's gone back to that thing where if a video has been removed for whatever reason, it's automatically removed from whatever playlists you added them to . . . which doesn't sound a big deal, but I mean, at least if you can see that a video is no longer available, you can still get the URL and Google it to see what the video was that's no longer available (because search results will turn up in the video was linked on other pages).