Later today we're going to roll out a tiny little UI widget which I think will make a huge difference to event organizers:

You will be able to add audio chat to your event halls if you feel that text chat alone won't work for your attendees.
How will you be able to add audio chat? With the new store UI widget:

Those items are from our test suite, but you get the idea.
I believe that these two features are characteristic of how we approach development. They're simple to use, accessible to anyone, and they're both based on customer feedback. Keep those comments and emails coming, folks!