Very interesting idea! Personally, I am not a fan of the second screen. I've used it mostly in AC:IV, but honestly I found it more an annoyance than anything- no purpose. I had the app to do the ship missions whenever I was away from my Xbox, sure. But as for any of the other features, like using it for the map or journal and stuff? It was more tedious to look down and use my phone. I know Bungie Mobile is going to be integrated with Destiny in a big way. I just hope it isn't done in a useless way like in my earlier example!