OK, so here’s a brief list of preliminary thoughts on what Destiny Mobile could be used for so that it’ll feel just as much a part of the game.
Minigame dailies (but not grindy), crafting/repairs/mechanical work
Memories, esp. incl. back-of-the-mind kind of challenges like hacking or lock picking
Simulations. models (like 3D of ship manipulating with multitouch)
Notifications, communication about special events/raids (joining, voting, negotiating, scheduling (link with cal?))
Basically it should be like Jedi meditation meets day trading (with a little bit of Words with Friends)
That would make me wanna be on my smart phone playing Destiny every minute I’m not playing it on the console.