As most of us should know the Prophets disappeared shortly after Truth was killed. There was only a population of a few thousand and they basically gave all of their technological expertise to the Brutes and then vanished completely. Now what could have happened to these San Shyuum? 900 or so people is enough to replenish a population, but their genetics would be Hell and the species has the very possible chance of extinction. However, there is another interesting thought. The Huragok left around the same time. There were only a few left that hadn't disappeared entirely and only a few of those were Covenant in origin. Could the Huragok have gone with the San Shyuum? Something to think about. I doubt that this problem would be addressed in the new trilogy since 343i has decided to market the Forerunners heavily as the new enemy. I think the disappearance of the San Shyuum could be a reason to make a whole other trilogy of games. Many of you might not like that, but hey Halo still has some story potential. Imagine. A rejuvenated San Shyuum race coming back to reclaim their empire after years of dormancy. A moderately good way to start a new story.