The game at present have a area near the center of the screen that takes precedence over any proximity targeting. But said area is invisible to the player. This is likely the source of a lot of grief about GW2 targeting being “random”, as the players can’t readily tell in the heat of battle that the zone is there or whatever is inside the zone.
So i propose that said area be made visible as a transparent circle. Either with a checkbox toggle in options, or only showing when the mouse is used to control the camera.