If you really want to take part on it and want to start accumulating points, just resign on your actual league and start a new one.
The criteria/rules (call it what ever you like) were announced before the start of qualification period. Now it's up to each one to decide what he wants to do.
About rules changing on every edition... Why should we stick always with same rules? Why should only 'old' players should take part on this event?
Just because they are longer on the game and the rules are the same, they should have advantage over new players?
I believe that some managers would like that OSM WC becomes an event where they are invited to play and not have to qualify....