In the area you fight Crota, there's random groups of skeletons strewn about. I always wondered who they were. I mean, how many guardians went up against crota in his chambers? I could be wrong, but from what I know, not many. I don't know man,...I just don't know. I feel the op though, so many times through the same instances and you start noticing things you ran past initially; almost like watching a movie for the second time, you know?