Ok so I have been doing a lot of bounties and doing trips to and from the tower frequently which got me thinking...
What if you could turn in/ accept bounties and even withdraw items from the vault in app! I mean, it has the groundwork functionality, what with the weapon swapping from mobile, and you already have a vault menu and a bounties menu on the tab, so why not just give us the ability to use it for something useful because, realistically, you aren't going to use the mobile app for much else while playing the game, so might as well make it worth it.