Imo it was a shame that Prison of elders was used so shortly during destiny and think it could maybe be good to have added a survival mode into the game, with increasing difficulties, enemies,boss fights every 5 or so rounds, random rounds so its not the same, random burns etc, and even a leaderboard for those who have got the highest amounts of rounds won, and then certain loot along the way ranging from shaders/weapons, exotics, special emblems for getting so far.. Anyone think would be any good or any ideas to improve the idea?