Guild Wars 2

Why not just have, instead of server vs server, World vs World’s that are independent of what server you rolled on? And during character creation you just have to pick a color: Red, green or blue (with possibilty to change with gems).

So the interface to join WvW would look something like this:

World 1
World 2
World 3
World 4
World 5
World 6 (overflow 1)
World 7 (overflow 2)

You can go to any world to help out your faction

So basically, at the end of each week, All the scores from all worlds would be added up.

Green: 5,334,434
Blue: 4,543,434
Red: 4,454,579

And the winning faction gets some sort of reward or bonus.

And the cost to transfer factions would be base on WvW score and would be limited to, lets say once a month.

High score faction: 800 gems
Med score faction: 0
Low score faction: They pay you 800 gems

I think this is somewhat of the right idea. Personally I feel that in order to address the issues of population, night coverage, etc., that you have to set up a system where people (guilds) form mega-teams of their own choosing. There would be a player minimum and maximum to ensure size is somewhat balanced. Guild status, communication, politics, alliances, etc suddenly become far more important, and balance issues, queue times, and questions about skill are dramatically reduced.

They would just have to find a place to fit unorganized casual players, aka pugs, into wvw, and to make sure filling rosters is fairly simple.