So, here's the scene....
I'm in the depths of a creepy forest, and suddenly a bunch of shadows slither out of the trees and surround me! One of them lashes out at me with a sinister claw, I draw back my club and clout him with a telling blow. The shadow turns on his heel and just starts *booking* in the opposite direction. Another shadow lunges forward, determined to choke the life out of me! I smite him and he, too turns on his heel and starts sprinting away. The process repeats three more times and I'm standing alone with my enemies fled to the furthest corners of the wood.
I do like the added element of the morale system; it has the potential to make the creatures seem a lot more lifelike and combat more dynamic. However, I feel that creatures turning around and fleeing at top speed makes the game less immersive. There is no sense of the morale wavering and then breaking, as the creature's doubt overcomes its courage. As it stands, the process feels kind of robotic.
-As jugnaut mentioned, the creatures do run too far. It would be nice not to have to run everyone down to the four corners of the map.
-As BadBud mentioned, the tough creatures should never run. They are the chief horrors!
-It seems that creatures run just as fast as you do. Should a skeleton warrior be able to keep pace running from a hasted PC?
-It also appears that creatures which don't even regenerate reappear at full strength after running far enough away. I'll have to investigate that one further.