Of course, but the plot those characters are a part of matters too. A good example would be the Matrix: great characters and the first movie had an outstanding plot. Movies 2 and 3 had the same fascinating characters but the plot was garbage. So, in my view, a narrative that fails to be as strong with it's story as it is with it's characters is a flaw. Breaking Bad didn't have this kind of problem in my opinion. Your belief that we'll continue to see these threads evolve is an assumption that you're using to fill gaps the ending left out. With confirmation there will be no Marty and Rust next year (and with the rumors that the next season will be unrelated), I think that's an unfair way to judge the show. The ending, as constituted and likely concluded, left a lot of the plot that was addressed in the show hanging at the end. Even the final conversation indicated a "we only caught this one guy and ultimately failed at the larger picture" type of conversation between the two detectives. Which is fine, it wrapped up the murder they initially investigated, but it makes large chunks of the season and the motivations the characters had utterly irrelevant if the Tuttle situation just dies with season 1. To me, this was too cute and happy an ending with so much unresolved. It felt rushed and a bit too Deus ex Machina-y to me.