I wasn't able to make it to his Social Hour, but I went to all his other panels. I asked the question after his GoH Interview. I would love to see the Social Hour, though. I wish I could have been there.
To the third question, Peter said that, when he was young, he wanted to be a writer. When He and Brandon were in college, they did a magazine together, and he decided he wanted to be an editor instead.
I was just talking to Brandon after a panel at Minicon. I asked "Is there any sort of civilization on Braize?" He answered with "Braize is the weirdest one because it's kind of like a prison. So, is there any civilization on Braize? Kind of. It's like a prison. That's all I'll say." I'm paraphrasing, of course. But what could this mean for the Cosmere?