Somewhat related, what happened to the idea of connecting a Mumble bot to Google Hangouts on Air so that people could join in on either Mumble (audio only) or Hangouts (audio/video) and be part of the same conversation. This has the added benefit of providing a live stream on YouTube which will then also be immediately available for replay after the session ends. Of course editing the audio/video and later posting the more professional version without the awkward silence, audio feedback, and other technical difficulties would still be necessary.