I've done 40 runs between my 3 characters with no luck. Even worse, in my group of 3 friends who play (including me), it's the 3rd exotic where friend A got it in a couple runs, while friend B and I are over 3 dozen runs with no luck. This happened with both Heartshadow and Hierarchy of Needs, with the same person getting it early while my other friend and I struggle with no luck. It's weirdly consistent. And if history holds true a 3rd time, I'll get it in the next few runs while friend B will take 20-30 more runs before finally getting it. The weird thing is, the friend with the bad luck [u]did[/u] get Navigator before we did...but as the consensus seems to indicate, that fluke really wasn't worth celebrating, since Navigator is lackluster (to be kind). I'm not sure what he did, but Bungie seems determined to screw him over any chance they get.