Polygon notes that Destiny 2 players can no longer access certain end-game content without purchasing the Curse of Osiris DLC first (and presumably future DLC as well). End-game content, such as Nightfalls and the Raid, have seen their base power level requirements increase, with Nightfalls now requiring players to have a 270 Power Level. While they're still available to the general public, the Nightfall's Prestige variant, which previously required Power Level 300, now requires 330 gear, a leve...