I can see your point but I think we have no idea how difficult it actually is to prepare such a huge event. If you asked the main organizers, I´m sure they would tell you than once in a year is more than enough :)

Well, the due date is some 4 weeks after the Krakow meetup, it´s not that close but you are right, it can come anytime... That´s why it´s so hard to decide :/