Directly add overlays through Twitch.
That ^^^. It'd be sweet, and I can't imagine it would be too hard, relative to what you already do. Please do it.
it would be cool if twitch had an overlay that worked in all games, while in fullscreen mode, that let you see your active chat members and the messages theyre sending in real time while playing a game. also the ability to ban users with the overlay as well would be cool?