One of the coolest things I've ever experienced in the Destiny series as a whole was the alternate path Black Spindle encounter in the Taken King campaign. I want more reasons to return to the campaign and I also think Adept weapons from Master Campaign Missions would be cool as an endgame pursuit for players who don't like Raiding.
-
I miss the vibe that the secret missions like Whisper and Zero Hour brought to the game. Don’t get me wrong I love the dungeons but Bungie were always good at including secret bits and pieces from time to time and extremely good at not talking about them.