Create a second chat-stream for the peanut gallery
Right now, if I understand correctly, people can 'Follow' a public game they are not participating in, and keep tabs on what is happening. It would be nicely social if there were a 'Peanut Gallery' chat-stream (perhaps in a pull-out bar to the right of the in-game chat) where people could talk as fans of the game.

Narrators can now keep an Open Lobby for people to discuss the game while it is running, if desired.
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Truman commented
This idea is so great. I would love to Waldorf and Statler some games.
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Sean Riley commented
I second this, but would suggest two things:
1. Give the narrator of the game the option to make this chat invisible to players or to players AND the narrator. Making a way to ensure the audience can discuss, but not tip off the players, is a must.
2. Call it the "Balcony Section". :)