Thanks, these are good ideas👀 Regarding 2) I like the idea but am not yet sure how to integrate it as I want to keep the user experience easy.
On mobile for example its nice if your YouTube app opens the URL (e.g. newpipe) which doesn't happen with alternative frontends.
Maybe as additional URL but then the reply could get confusing or cluttered for some.
Really hoping to see clients do this at one point.