I would like to see an option to choose a different default setting on a shared channel basis.
Different channels and communities punish people for different reasons. Especially if you are a long time member or a mod in several communities you most likely know the different criterias each uses. You might not be as strict yourself as one streamer and you might be more strict than another.
Being able to choose the default correctly per shared channel there is a bigger chance to be right from the start with the default setting for your stream instead of changing it on a user basis later if those users happen to show up in your chat.