I don't think the human relationship stuff including the animal obsession really fits in the noir movie that Blade Runner ended up being (and hard to say that the decision to turn it into a noir thriller was a bad one considering how influential it's been). I do agree that keeping the other agency and their paranoid testing of each other would have been entirely in keeping with how the film worked out though. But Deckard testing as human would have disagreed with Ridley Scott's idea that he wasn't...