Let people who want to buy season passes continue to do so but adding the option to swap bright dust for season passes would add another layer of grind without adding a bunch of goofy braindead mechanics It would also help with keeping the player population stable and activated in between big expansions. Those activated players are more likely to buy expansions and expansion bundles Increase access to season pass so that more players are playing the game so that when new expansions roll around Bungie has an easier time selling a higher population of more active players expansions and expansion bundles