Since I cannot change my previous question into a feature request, I guess I have to make a new post:
Please make it possible to use our synced LR albums as Apple TV screensaver!
It is very cumbersome to export pictures from LR and import them into Apple Photos (which I don't use for anything else), and move them into a shared album which I then can choose for my Apple TV screensaver. And if I want to replace an image, I have to export it again, import it and remove the old version manually in Apple Photos.
It would have been so much simpler to just choose one of my synced LR albums!