I would like to see a situation where you have a party wipe, but when the players hit the recall button after death they show up in another part of the dungeon in a cell, with their weapons stripped away with low hit points, and maybe only a few spell points. They then have to extricate themselves from this predicament.
Or better yet, maybe it's not an entire party wipe, but one player gets dragged off and the others have to go rescue him/her all inside the same instance.
Also, from a mob perspective, why is it that a group of goblins stand there and fight to the death when they know very well that there are myriads of other goblins throughout the dungeon who could help them fight off the adventurers. Maybe once you've killed off 3/4th of the group, the remaining ones will run away in the direction of the closest group of friendlies in the dungeon, maybe even trying to open a door to let their friends reinforce them. Suddenly you have a reason to try and chase a mob down and prevent them from opening that door in the same way you try to prevent them from ringing that gong.
I just think that too many MMORPGs settle for death as being the only viable solution for a monster or a player. It doesn't always have to be kill or be killed?
Maybe diplomacy could be used to convince a mob to let you go and exit the dungeon graciously (for a price) after you regain consciousness.
Thoughts?