Death and the undead have been treated in two very different ways in WoW lore.
1. In vanilla, undead lore was much more personal. You explored the state of affairs of a lone undead wandering Tirisfal Glades, how they approached their suffering and loss, how they felt for things and didn't, how they explored their desire to join the forsaken or go it alone. You went on a quest to deliver a pendant to a grave, and learned of how a happy married met their gruesome end with the plague.
2. In SL, the lore of death and undead focuses on the systems behind it all. You learn how the machine of death works, how it was broken, and by whom. Who stands to gain from this. You learn of the dark forces behind the veil, who are the masters, who are the cunning, who are the servants, and who are the damned. You learn of the systems in place, and how it fits in the cosmic narrative.
Which do you prefer?