I'm always very interested in research on happiness, for reasons I think are obvious. I would have loved for there to have been more questions from Prof Goodman asking about if he had specific advice for how we could lead happier lives. Something along the lines of "With your years of experience, do you have one or two changes you've made to your life that have made you substantially happier?"
That would be a very good question. With Dan's expertise in psychology, he would be able to give some very insightful answers into what makes humans happy and how one can become happy.