I’m sure this has been brought up before, but I would really like to see a party search feature like the one put in Guild Wars 1. That system worked acrossed the districts in a town. If it was the same system that worked across servers it would open the amount of people to play every aspect of the game with.
Some of the best groups I have found have been in an overflow with people from other servers. When I can’t get in to an overflow that makes it tougher to find groups.