Ok hear me out: an add-on that promotes "Watching less youtube!!!!". Isn't that genius? It could be 50/50. 15 seconds of blackscreen for people like you who enjoy starring at it, and 15 seconds of "less screen time" promotion. That way you are frequently reminded that you could do better things with your time. Example : "You have starred at a black screen for XX minutes today. Did you know that a basic ukulele cost around 30$ and you can learn playing by investing as low as 30 minutes per day?" On top of it, I will ad a functionality that let you customize the color of the blackscreen! What do you think, are we getting somewhere or what?