I woul also like to see a feature where the host could disable watchers ability to speak in the game room so those who are playing could discuss what they need to more easily to get the game played. I think this would be helpful if events were indeed open to viewers in the future. Just my two cents, although I think whatever change, if any, would be fine. I don't think it's even so bad now.
About being able to spec any game as a premium feature: What about the secret practice sessions from Tyrant, or other private games? It could turn out to be annoying.