I think the main gripe with most people's complaints is that they didn't expect to hit the power cap so early (1 month) and not have anything left to do. If they had things from the D1 Y3 like a book of achievements you could work your way around this would give players something to do once they hit the cap without adding content. If they had a catalogue of their armour/weapons sets that players could work towards completing, again this isn't additional content that would give players something to do, you could still have the same amount of game content but just most incentive play. Which is what the game lacks.