http://nwvault.ign.com/View.php?view=scripts.detail&id=2483
What does this mean for EFU? Essentially, this means that creatures will have a life of their own and will expand and grow making the world feel even more living and encounters will not be based on spawns but by survival of the fitest. I think something like this would make the world feel even more alive and unpredictable as well as further contribute to the feeling that the underdark has a life of its own independent of player actions. That troll raid which seemed random a day ago was actually because players let them grow too powerful and so they attacked Sanctuary as a consequence of this. Definitely something worth considering