The question/concern about Destiny's repetitive missions and their response about the Darkzone being unpredictable worries me.
Reading between the lines it really sounds like the 'endgame' is just going to be DZ, mission replay on additional difficulties and 'more stuff later'.
They didn't even hint at any other PvE content to be excited about -- he just came back and reaffirmed the poster's worry that they're going to force players to repeat missions until DLC/updates hit.
If that's the case, they should just be upfront about it rather than string everyone along until the game hits and pisses people off during the launch window.