I like what Bungie did with engrams. Played some after the last update (no farming, only missions) and engrams were dropping left and right, including blue ones (I rarely ever got those). But my biggest surprise was when Cryptarch actually decoded blue engram into a blue sniper rifle (and a very good one). Most blues that I decoded before turned out to be greens in disguise.
I don't think they did anything to the engrams, did they?