So in Caydes Secret stash mission at the end, ur ghost tells you (if u examine a certain spot) that a secret Gaurdian sleeps and that ur ghost tried to wake him. So at first and most popular thoughts were that it was a reference to Master Chief. Bungie, u got Destiny now, move passed. Any way, back on topic. I think that this has to do with the actual destiny story or lore. I mean it's kinda a big deal. A powerful Gaurdian that ur ghost wanted to wake but couldn't? What if he's evil now or will he ever be awakened? What do u think?