I know this may not be possible but I've been playing GW2 lately and the best thing I ever saw just happened.

My server was full so my friend was on another server. Without logging in/out or doing anything else I invited him to my party, I could /tell him as well. We 'synced' and all of a sudden we were on the same server without knowing it; it was seamless.

PLEASE can it be almost like that? Have servers if you want for PvP/General play and allow this type of dynamics? Because at that point who cares what server your on

GW2 charges for server transfers as well; but really the only thing you can't do is PvP on someone else's world.