Call out specific guidelines for original creators
I stream my own music, 100% created by me. Many times, this includes improvised material created on the spot - so it would never be trackable via any digital rights system. Twitch gives no guidelines about this, but should call out specific rules to be sure artists like myself are not wrongly accused of a violation.
I am an ASCAP member of 30+ years, but that does nothing to help me in these cases. Material created in an improv context can not go through the same checks and balances as pre-recorded material released via album or download. Twitch needs to understand how users are leveraging their platform and be prepared to handle these types of artists.