Guild Wars 2

1. WvW should consist of a battle between 2 servers.
2. Make map smaller to limit the amount of running currently being done.
3. Institute server rankings.
4. Top 2 servers face off in 48 hour battle.
5. Top server will receive special bonuses.

The three server battle is intentional and comes from DAoC. The point behind it is that when your server has an upper hand, you have to face both enemies to finish them off. So the battle stays dynamic even in that stage unless one realm is too powerful.

In a two server system, it usually just snowballs unless there is a hard population limit like BG/sPvP.

Server rankings is a good idea however.