All MMOs do that. When DC Universe Online releases a new DLC pack it always includes new gear to buy that raises your Combat Rating (their equivalent to Light levels). The difference is that when DC Universe Online releases a DLC pack, they don't lie and call it an "Expansion". And they price them accordingly, each is only $10, but for that you get new gear, styles, Achievements and a good amount of new content. The first one, Fight for the Light, a Green Lantern themed one, added 3 Alerts (Strikes) and a Duo (a two man strike), but it also added the Lantern powers for Heroes and Villains (like adding a new subclass every Guardian can use), hell they gave it away for free to anyone who had an account at the time they went Free to Play. So yeah, Bungie is going to continually make us grind new gear and light levels like every MMO does, even thought Destiny will never hope to have the amount of content the average MMO has. And no, that is not okay. At all.