I'd like it if the compass actually points toward the direction my wizard is facing.
Also, I'd like to be able to mark areas on the map as a sort of GPS for navigating my way through worlds and toward my destination.
The map marker system could be simplified to where you can only mark NPC's that appear on the map. That way, the game will simply duplicate an already existing quest arrow.
Finally, the map could also receive a small upgrade. I'd like to be able to click on and view specific areas in whatever world I'm in at the time rather than simply being able to view the area I'm in and the world I'm in.