Would be interesting if console games included smartphone apps that had more game content to augment the game on the console.  Like mini-games to get more gold/money/experience/characters/weapons etc to use in the console game.  Also, by playing the real game different smartphone minigames could be played.

To make money some of the games could offer in app purchases.

Watch Dogs did this but all you did was play against others that were playing it on the pc.