This, they basically have to have revenue to keep developing the game, rather than just let it stagnate. Even porting VoG in from D1 takes a load of development, and its been a fun addition. for me Bungie are doing a great job at keeping a 7 year old game fresh and engaging, might not be everyones cup of tea, and this 6 month season will be a challenge to keep fresh, but its top value for money game for me