I had this idea the other day that SE makes up a story that takes place for the day and intertwines a handful of notorius monsters in the story and they walk a path at a certain time all across Erozea. One NM would start walking his daily path at 2:00 in a part of Gradania and then another at 6:00 in Uldah and so on putting the story together that they create. Then maybe one day the story could finish in a boss fight with an Epic NM.