Mercer and I have been talking about some features to make Twitch work better with WarLight. For one thing, I think games need to advance much more quickly if someone is going to stream themselves playing a multi-player game, which might call for some sort of speed-game setting. And we may have to change the way booting works if the time given for each turn is very low.
I also suggest some sort of spectator setting that will allow us to view from the viewpoint of player A or player B, and be able to switch between these. This can be applicable after the game is done, but it's pretty necessary to provide better commentary. Instead of saying what player B is seeing, we can just click over and show the audience exactly what player B saw.