All you have to do, Bungie, is add a unique reward each week on Nightfall. When one is repeated, you get a chance at the "Old reward" (DFA for example), and a chance for a "New reward" as well. You should have the assets to give 52 unique rewards away, per year, and if you don't... make that a priority. Keeping a fresh reward to grind for each week will keep the game alive for players and streamers alike! Also, why not make the nightfall rewards drop in crucible, as well? Super rare, but possible? Just a thought.