I want to see the chat system expanded so that players in game can communicate with one another even if they are not in the same realm or already friends with each other.
The chat system could include chat rooms for each of the in game worlds plus others for activities such as pets, fishing, crafting, and instances like Waterworks and Aquila ones.
Players could host their own chat rooms by creating one and inviting other players to join it.
This would make finding help much easier. The time it takes to find someone to quest with whom to hatch, run dungeons, or quest could be reduced.
Not only could this be used to promote players helping one another, but it could also give players something else to do as they fight mobs for tedious objectives. Players could just talk as they kill their dozenth pair of Watermatons or whatever.