I saw a tweet from Bungieinformer that they would like to be able to replay the new expansion missions but once they are done they are gone. That made me realise that mine also are gone. I've only finished the first quest on hard, and working on the second, so my question is - once I finish all the quests would I be able to replay them again?!
The first one is such a short mission because it's really just a mini-quest. Much like the fourth one people did today to finish dealing with the Urn of Sacrifice.