ArenaNet:Guild Wars 2 suggestions/invisible portals in explorable areas

(Discussion)
i think that the white circling portal in gw1 makes the game look fake and ugly so i though their should be an invisible portal to enter another area so when you walk into it your screen fades black and fades back or when your walking out a tunnel,dungeon your screen fades to white and back and the character keeps walking until your screen is completely white,dark then he gets teleported like this it looks like your walking to the other area and more realistic and then when your screen fades from total white,black to transparent your character stops moving and so players won't accidentally go trough the invisible portal they're should be a sign that says your leaving this (area name)and entering (area name) so players wont get mad cause they couldn't see the portal but the invisible portals will make the game more realistic and the white circling portals can be put in towns to teleport from town to town by paying some gold or can just be deleted


 * Why this is a good idea


 * Why it may not work out