I've never heard Destiny summed up better than:
"We were going to say that Bungie had made no effort at all in any aspect of the game, but that’s not quite true. In terms of taking ruthless advantage of their fans they’ve left no corner unturned."
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And Polygon... "The Dark Below is thin on content, and it fails to expand the scope of Destiny in any meaningful way. Bungie has adopted language from the MMO genre to describe this DLC as an "expansion," but the studio doesn't establish any legitimate claim to the term."