You asked for "non politician, non regulator, non government officials", so that's what I dug up.

It doesn't seem like a crazy idea for a corporate retreat-style event. Have a day full of internal presentations reviewing the last year, describing future initiatives, etc. After dinner, Yellen talks, telling some stories about her time on the Fed, working with Clinton, and maybe caps it off with a section about "Future Challenges." People like hearing/meeting celebrities, so it caps the day off nicely while being reasonably educational too.