I've been streaming on and off for nearly 4 years (consistent for past 2), and there are so many competing live-streaming platforms, mostly regional ones that have a feature that lets between 2 and 4 streamers engage in a so-called "Battle", which can easily be expanded upon the Stream Together feature. Let's learn about how it can work on Twitch. For purposes of this idea, i'm using the term "Player Knockout" as a codename, rather than reflecting on any forward-facing name should this come to implementation.

-When and if all streamers joining through Stream Together are afffiliate at minimum, the streamer has an option to initiate this "Battle" where Reactions and Bit Cheers earn them points. When 4 are in at once, it is split into Duos.
-Battles would last approximately 5 minutes.
-A special type of Hype Train can be incoming halfway through this "Battle", which is similar what we know and love, but in 2 stages. First being a Bit Threshold, and then either Double or Triple points unlocked if a streamer reaches it.
-Streamers can "Mute" their opponents during a battle if they are distractive.
-The losing streamer (or duo) can be subject to an on-stream "Punishment", just so long as it adheres to the Community Guidelines.

If one competing platform suddenly sunsets its operations, we must be prepared to take some of their community in, even if it means adding new features to get them to stay in the long run, and possibly make way for a new type of Streamer.