Hey @YouTube and @youtubemusic just a suggestion but when a video is removed or deleted from a playlist how about leaving the name of it in its place so a mf can at least find it again somewhere else smdh. 
That's a good idea – we're always looking at ways to improve the platform. Mind passing this along via the Send Feedback tool: https://yt.be/help/feedback ? It's how we collate & prioritize requests. You may not get a reply, but we review all feedback & use it to prioritize requests.