I think the game loop is pretty good. I think there would be a little bit of red tape involved with the IP if you were to make it a full game with Sullivan and his crew but you could definitely attach the same play concept to another scenario. it would even work well if you make a retail/help desk simulator, and then the cards are responses to client issues, trying to keep them at the desk or on the phone, balancing between solving their problem or getting them to annoyed that they leave.
Good Job