We all know about those annoying Eyes that run off and tattle on you when you're in their area. I've found them most annoying in SMV when trying to do the atamal terrace quests. Anyways, I noticed that when they detect you, they run off to a mob and make it aggro you, then they despawn. I decided to try something...I flew down next to it, let it detect me, then flew up into the air. It ran off and ratted me out, then despawned. Since I was in the air, the mob didn't do anything. When I go to quest/farm in areas with eyes now, I make sure to despawn all the nearby eyes so that they don't aggro the fun 70 elites onto me.
Maybe working as intended, maybe a sploit, either way it has helped a ton. Obviously you'll need a flying mount/flight form for this...I suppose a rogue with vanish and a hunter with feign death could also work.