How about a "don't recommend things I've already watched" option?<p>The thing is, I like having a watch history and I like having suggestions based on it. If I watch something that I don't want affecting my suggestions, I'll delete it from the history after watching.<p>The things I watch on YouTube, I generally have zero interest in watching again, and if I really want to, then I'll find it in my history. What I really don't want is for something I've seen to be recommended at the end of a video (where there is no clear indication if you've seen before it or not) or polluting the sidebar of suggestions.<p>I'd also very much like suggestions to fall off the list if I don't watch them in a day or two. Sometimes suggested videos stick around for weeks. I don't want to click "don't recommend this channel" or "not interested", because I might want that channel's content recommended later, and I might be generally interested in the topic, but not enough to want to watch it now.<p>And while we're dreaming of features: let me disable shorts permanently. I refuse to support vertical aspect video (and based on the minuscule number of views the recommended-to-me shorts get, people interested in the sort of content I am agree).