I am about to answer cloudscudding on this; chinders may be going to talk about it, but I think she has good volunteering ideas, and I'm glad she's taking point on this, because I like the stuff she's saying.

This came up in the con postmortem, and I think that con postmortems are often a way for people who start the con postmortem going, "Good con! I had a good time!" to go into negative mode whether they intended to or not, but that may or may not be the only issue here.