Gjallarhorn. You've seen it, you crave it, you loathe it in PVP, bur it also predicted the eventual inclusion of the Sunbreaker subclass for Titans.
I believe you all know what I mean:
A) It does Solar damage, which Titans were unable to use before The Taken King.
B) The reticle literally has the insignia of the Titan order in it. (Enter ADS. Look at the center of the screen. Best results in total darkness.)
Coincidence, perhaps? I don't believe so myself. What can be said by others?