Yep, I noticed the small changes you are referring to. By the way, I am not talking about your own character like it was the case with phasing in WoW (I find it not interesting as you were not able to group if you weren't in the same phase). The changes you are referring to are similar as they only affects you. I was thinking more about how you can affect what other players are seeing. For instance, the Shahguins zone ( sorry don't know the name in english) with this wall which delimits it. There is an NPC that gives some quests. Imagine you implement a fate where the Shahguins attacks the wall. So if nobody does the fate, the wall is now in ruins. You get some another delimiter a little further with maybe some NPC fighting the Shahaguins. The NPC who gives the quests is now standing at this new delimiter, he can give the same quests. You are now in a different state which would provide other fates to go back to the old delimiter wall. I mean this is not fundamentally different but the landscape (not sure about the word) changes a little bit and everybody sees the same thing. Just an idea though.