Besides being lovingly shot and edited, shows like Saul and Breaking Bad break fresh ground in that they concentrate on the creation of the villain from a good person… most shows are mostly about the hero, and the villain comes into the mix already-formed, generally un-changing and unrepentant, and while they might reveal some back-story, they don’t really follow a Mirror Universe /Evil James Campbellian “Villain’s Journey” into darkness, like Saul. Here’s a basically good but slightly flawed guy, thru a series of events not entirely in his control or of his making, forced by his decisions and his character into ever narrower choices. Same with Mike the “mechanic” in the same show… The point of the plot in most any movie is that the protagonist changes by the end of it, becomes a different person. We’re used to that change being positive, not negative, and that’s part of the fun of Saul. Every so often, you wish you could just let your inhibitions go and be evil, so you can get shiat done in a world full of rules and barriers. These shows let us play with that and imagine ourselves on the same slippery slope.