Crossing each map shouldn't feel like you're a lawnmower wading through trash mobs merely to get to a vista, quest giver or increasing numbers of collection items (looking at you Skyscale), then having to cut the same path on the way back out because the grass already grew tall again...that's just boring repetitiveness. I guess that's why I enjoy WvW, because the location and density of enemies are in constant flux, as are their professions, builds and skill levels.