My question to you would be why should a package of memento objects which are cosmetic and have no effect on game play other than to be a fun and completely unnecessary/optional keepsake be items that we "should be able to unlock by making progress in the game" instead of offering to customers as a collector's item. This isn't content that was removed and added later. It's not something that is going to alter game play in any meaningful way. Even the exotic class item is worthless after you reach level 40. Your argument would be valid in another scenario but not here. Not when the thing being offered is, in every way, optional and unnecessary and extremely limited in function.