It does help if the committee and the fan guest communicate well as to what the fan guest can contribute - without communication, the fan guest may not feel that they have the opportunity to contribute. I'm pretty sure that some of the fan guests that look like they haven't done anything may never have been given the opportunity to do anything. And while it would be nice if they were pro-active about it, not every fan guest is being recognised for that aspect of their contribution to fandom.