Addendum to say that none of the previous means I did not love Fourth Street, which is single track and awesome. What works for 125 people does not work for 4-500. Not to say that the old fangled Readercon does not appeal to some. It just smacks of the wrong direction to me, and for me as a participant, the new format removes much of the value of the con to my career and makes it a net negative. YMMV.