Remember how in D1 we could replay any mission or strike we wanted to by simply selecting an icon on the map? That feature is something D2 needs. All Story missions, world quests, adventures, and strikes should be selectable from the director, and even started in world by finding the banner where we started them originally. Any activity entered into through this method would be at its original difficulty. Heroic difficulty equivalents would be accessible via Ikora's meditations and World NPCs. Also, in Destiny 1 the intro mission wasn't replayable. This time, I think that should change. ALL missions should be replayable this way.