Destiny will loose player base every big game release. But Once they get bored after beating there New games they will Be back to grind the same shit again. Honestly in my opinion if there's any game that will kill destiny it will be The division, if Ubisoft knocks that game out the water Destiny will be a thing of the past till destiny 2 which will be another grind fest with an actual story this time... Lol Also I believe Taken Kings Dlc will bring back 50% players who can afford it.