The past couple years a LOT of players have suggested that FFG do a registration of interest for these events first, at which point they can then try and acquire a suitably sized venue for the amount of players that want to attend.
This seems to have been ignored though and FFG insist on running the event at their headquarters, which is fine its their event to run.
Having said that, as I have said in other years, this event is not what most would consider a world champs event, merely an open event where you only get to play if you were lucky enough to be online at the right time with a good internet connection and the ticket suppliers website didn’t crash before you got tickets, hardly a suitable method of determining those suitable of a "World Championships Event"