The success of Rian Johnson’s ‘Looper’ is great news for fans of wholly original movies, because the Sony-distributed, time travel-based hit is not based on a novel or comic book or toy or anything else, and hopefully it is a harbinger of things to come. But that originality may spawn unoriginality as the success of the film may dictate a 'Looper 2.' Should there be a 'Looper 2?' Could there be a 'Looper 2?' We investigate.