There is a decent amount of loot each season, but only loot that is slightly better/stronger really matters to 95% of the players, and most new guns are either bad or side grades. Do we really want to farm a gun for 20+ hours if it's just a strong? I don't. New perks sometimes compliment or makes new builds possible, but that's not enough reason for the average player to farm a new gun. I think quality/progression is more a problem than the quantity.