Add tags for age ratings
In my experience, few viewers actually remember whether they got the Mature Content warning when they first joined a channel.
In addition to the existing Family Friendly tag, a tag to mark channels with an age rating and allowed behaviours would be highly useful as a constantly present reminder and a quick way to double check what topics might be appropriate.
Example tags: Adult Topics, Swearing Allowed, 16+
Ideally there would be a way to set a default tag to apply, but also a way to change the tag for events like co-streams where one might have a different rating just for the day.
I find this particularly useful because, culturally, Scots use swearing like punctuation and this exact scenario has tripped me up more than once.