Stream queue (viewer-side)
Add an option to switch automatically to live followed streamers once current stream is over and another channel wasn't hosted/raided. Extra points if you could let us set priority manually, i.e. "Fav Channel 1">"Fav Chanel 2">"Raid/Host">"That one channel that regularly is on but you're not super hot about watching it but it's better than (Stream is over, see ya in a week) message".
Main objective: seamless watching/sleepwatching experience
Twitch profit: more ad rolls
Streamers profit: more lurking viewers