My understanding from forums is that the only ones worth saving are the cryptarch reward packags as there is a chance for the leg engram to be generated upon opening and that will therefore be a 'new' dlc one. The others seem to come from a prexisting loot table. I'm gonna save up a whole bunch of reward packages anyway(public events) for the xp boost to level HOW gear quickly, and the cryptarch ones to try it unless that doesn't work? But knowing Bungie dlc policy, they'll stop that from working anyway and this post will become total crap ><. Good idea to just have each faction hovering near lev rank completion and full set of bounties saved up to hand in I guess.