For the new exotic things you have to seemingly much grind, I have found by now 35-40 hrs. Time no exotic objects. Or you can buy these at the dealers 'Xur', but for the currencies you must also invest a lot of playing time. The PS-players exclusive content 'The 4th Horseman' (exotic shotgun) and 'The Undying Mind' (Strike mission on Mars) there until autumn 2015, which I can not understand. Probably come this only with the first real DLC 'Plague of Darkness' into pure Game. But Activision wants but probably have the full price of 50, though such a meager expansion costs 20. I will not vote, rather I sell the game again.
Conclusion: I can only advise all interested parties of the purchase. Especially people who are only interested in the story. This 'enlargement' has nothing exciting, nothing new and is simply recycled content known as formulated some reviewers. And for 20, for which there is a Season Pass at other games. You can tell when Destiny once again, while the gaming industry develops.
UPDATE: As Bungie was now announce the third expansion for the brazen price of 40. Much worse (for people who already have the game and the first expansion) appears in September is that there will be an edition of 60, the main game contains the first two extensions and the new third expansion. If you currently therefore has only the main game and want to buy the first two expansions, it is better to wait until September to sell their own home game and buy the Advanced Edition.