DC travel was a mistake, well not per say, but the players made it a mistake by all flocking to one datacenter on each region (Aether for NA, Light for EU) leaving the other DC's barren of parties.

I am the first one to bash this company because I think it does a million mistakes, but this one is on the players, the only way to fix it is to either remove DC travel or open it all together even to other regions (which would be a disaster, especially for JP as they hate other communities)