Okay so... many of us are feeling quite weird after reaching the end of the map when swimming and hitting the edge barrier.
My suggestion is to remove that barrier and put some cool animation that just kill us after we see warning on the screen, maybe the water can go darker on the surface so we can see the indication where we are allowed and not allowed to swim. Arenanet can make some cool animations like ... adding piranhas that are biting our butts putting blood condition that you cant cleanse, or sharks eating chunks of us, or some giant creature just swallow us making the screen black until we port to nearest waypoint, adding some mythical creature that is known to be the guardian of the deep and when you see him you know you are screwed . Why not adding them all together so it's not some boring death every time. Imagine all the cool screenshots and players coming together to die just for the fun. If this is too hard to be done at least consider to be done on the new zones while still being build. Would love to hear the thoughts of the gaming community and the developers as well. I think the idea have great potential if the right guys see it and approve it.
Edin: Also I hope if the developers can't or wont do that what is the reason behind their decision. Some personal opinion from some of them will be cool so we can understand in depth how they react to new ideas an how they grade their projects in the game.