Minimum Account Age Control
The vast majority of the time that harassment occurs, the accounts being used to accomplish it are all recently created. Being able to limit chat participation (or ideally, anything that can be seen by viewers) based on the length of time the account has existed would go a long way to preventing abuse.
This would cut down on the bad actor harassment on my channel by at least 75%. The infinitesimal risk of alienating one legitimate new viewer on a brand-new account is a chance I'm willing to take to keep my show safe and friendly for the community.
This is a fantastic idea, and would help streamers avoid a lot of problems with troll accounts.
this would be excellent