I realize a lot of people avoid them, but it’s a cure for the symptom and not the disease.
The disease, in this case, is the ridiculously large HP pools of mobs and the tedious nature of fighting trash in places like Arah, CoF etc.
Exploiting the AI pathing is usually preferable to actually engaging in the core element of the game, combat. That isn’t a good thing, but it isn’t new either: people have been using this technique to avoid trash since the inception of EQ.
GW2 has definitely made PvE much more accessible for the most part and I think part of it corresponded to the 5 man limitation, relatively short content (even Arah is only half of what some of the older games’ dungeons were… if even that) and the ability to skip to the difficulty with less tedium.
I think the game ought to go one step further and let people skip entirely to the more difficult, engaging sections of the dungeon, or simply make the trash fights die more quickly, but require more skill to defeat. *Instead of being bored up to the fight with Giganticus in Arah, you should be engaged and prepared. *
