More info about Sverag: Being a first person view whore like myself, you may have missed this. You can use the 3rd person view to get a better look of the mob positions outside. If you wait for pathing and choose the right route, you can get across without agro. I don't recommend pulling into the tunnels since the pathing is unbelievably bad, and you'll prolly end up bringing the entire court yard upon yourself. If you use a bard to train around mobs to free the way for others, make sure he keeps psalm of veeshan running - mobs sometimes cast tendon slice, and if you get snared, you're doomed.
About the instance: Dunno if this is the same for everyone, but I can't use target nearest npc to get the black guys on target. It's rather annoying that I have to target manually. Good idea to bring at least two healers and two people capable of tanking the instance, so you're covered regardless of who gets charmed.