I've been to an event like this before in a different MMO (WoW) and I have to say that I absolutely loved it. The thing was chaos because it was in the main capital of the faction it was taking place in but I had no problem with that, in fact it was kind of authentic because of it! The way that it went down was that there was a Guild that did what your FC seems to do except they sponsored a traveling Bazaar, it worked the same ICly and OOCly, the characters would contact the company expressing their interest in having a stall there. Pay a fee for said stall. Then have two people man it and call out to passerby's advertising their wares and do business or what have you as it happened. Of course I think everyone jumped on it because they were selling things at prices that you just couldn't get anywhere else, for any WoW people they were selling ALL Glyphs for only 30 gold a piece, so I was all over that one.
Anyways. I got off track. I think it'd be a wonderful idea and though I don't have a crafter I'd certain be an attendee and buyer just for the fun of it all! One of my characters is sort of a wide eyed wanderer at the moment so this would be right up her ally when it comes to attending. If you're worried about clutter of chat...hmm, you could always have the advertising and chit chat in the open but the actual business dealings be done over /tell? I'd suggest just having a temporary LS but I'm not sure everyone would fit, if they would though that'd be neat!
Anyways. I got off track. I think it'd be a wonderful idea and though I don't have a crafter I'd certain be an attendee and buyer just for the fun of it all! One of my characters is sort of a wide eyed wanderer at the moment so this would be right up her ally when it comes to attending. If you're worried about clutter of chat...hmm, you could always have the advertising and chit chat in the open but the actual business dealings be done over /tell? I'd suggest just having a temporary LS but I'm not sure everyone would fit, if they would though that'd be neat!