Had an impatient healer that wanted to rush through Grim Batol today. He wanted the tank to pull Throngus right on the adds in the middle of the semicircle. We were stunned by the Twilight Beguilers while Flaming shield was blasting us. He then raged on us for not interrupting the Beguilers........
I think the problem with TW dungeons is some don't know the mechanics and others just want to blaze through. Most of my groups have been good.