We could have either an API that sends a signal for when an ad is about to be played or an option on the Stream Manager that plays something when an ad is about to play.

So at least the streamer is aware of when to pause the game to do a bathroom break or not go in an critical part and make the viewers lose it because of an ad.

That would help some of us with selective focus and don't have 2 monitors to keep track of the ads in a full screen game.