Something like... aggro ranges grow? For instance, nothing is bothering said shaman in this vid:
http://www.youtube.com/watch?v=k-zAS...eature=related
He hits a spectre, and the one behind him that wasn't even touching him before aggros without him getting any closer. That's how I remember this "aggro stuff" working.
Its much different and hard to put my finger on, so I point to this video.
Training things over top of people that didn't like them that were undead, absolutely. Giants were the same, they scowled to all and weren't on any faction table of any kind.
A mob being on a faction I believe did make it discriminate. Hell, I remember seeing spectres kill all kinds of things that got near them. I believe I was able to train a mummy into the derv camp to "tank" for us to break into a full spawn at derv 2 back in the D (the mummy being slower on foot than most helped as well).
Lol I think that spectre tried to gate on him (1:34) too...