I would like to join, but I don't think there's any other danish players.
There is a danish facebook board gaming group, where I can try to ask and search for 3 other players (or however many is required).
I don't think the competitiveness should have any factor at all in the teams. If a country can put together enough players they should be allowed to compete.
I think there should just be a rule of "1 team per country" or "2 teams per country" and then make a competition with the signed up teams.
And I think players signed up from countries without enough players should be put together by the tournament leader(s), so players from countries near eachother form teams. (So you can sign up without a full team, but then you aren't guaranteed to be put in the tournament).