Sweden is far from the countries from Western Europe, and then expensive. France is worth visiting too, we all could defend our point of view. I mean, it's gonna be very difficult - even if the players are very motivated, like me - to organize some international event. We're not all sons of Bill Gates, and we don't know us each other thaaat much to spend such a lot of money.
You maybe could organize that kind of event in your country (it wouldn't be the first time it happends), but I really doubt of the success of such an international 'convention'.
Edit: btw, you also should think about age problems and we're not native english speakers neither. That's another point why I really think it could only be successful when you would keep it inside a country.
Not Luck, Just Magic.