Implement moderation tools during the streams through additional input
It would be cool to have additional controller (or keyboard) support ready for a moderator while the others play and stream the game.
For example, player A and guest/moderator B are streaming the game. Viewer C says "you guys are %$"%$!". Moderator B pauses the chat flow on the PS4, selects the ugly comment and applies the warn/ban option on viewer C while player A keeps playing.
OR
Player A pauses the game and pauses the chat flow, selects the ugly comment and applies the warn/mute/ban option.
The first option would be better, since it would make the experience fluid with 2 or more people and would prevent the player from having to interrupt the game every time a ban is needed.