Since launch, I have had 1 blue engram upgraded to a legendary for another class. NEVER seen an exotic engram I didn't have to buy. 3 legendary engrams drop in game. NEVER a legendary engram upgraded. (Cryptarch at lvl 59). This with well over 200 hours of play time. I have gotten one exotic drop on hard VOG raid about a month and a half ago (red death). All exotics I have seen have been dropped through nightfall completion save the single VOG. What baffles me is how one person may continuously get 'lucky' over and over with upgraded engrams/engram drops in mission (not completion) while most rarely if ever see any at all. Makes one feel targeted and much less random. Imagine playing poker for 300 hours winning only 3 hands. I call that a stacked deck. To get a mission completion drop is a 'thanks for playing' consolation prize in comparison.