I like what other games have done. Allow gamers to freely switch to another server in-game. Servers were labeled green, yellow, or red based on congestion and people could move their character to a less populated server. Or even when a person ''teleports'' or ''returns'' in FFXIV, that they would be going to their chosen destination, but on a less congested server. People in parties could still talk to party members between servers, and a party member could say "Hey. Everyone move to XXXXX server." Joining instances could teleport you to less populated servers, etc. Let the game itself and the people playing it regulate the congestion. *shrugs* Seems to work for others.