Willie the Duck
Hero
The Sopranos is less a dividing line and more of a cornerstone of a building project. The thing that it is didn't start with it (I, Claudius being a good example of an example that came before. Roots as well). What the Sopranos did was suggest that maybe they should always have one or more of these going, because being known for them was profitable. So instead of having the field dotted with the occasional stone, you have a continuous line of them which you can have as a foundation (for your network I guess, this analogy is rapidly getting away from me).Sopranos definitely marked a stark dividing line for sure. And I would say it is maybe my favorite show after I, Claudius. But I also do like Babylon 5 and can see its influence on these shows.
Maybe it is my tendency to prefer things in their proto-phase, but while I love Sopranos and enjoyed Breaking Bad well enough, I miss shows that had really great stand alone episodes and monster of the week. The more the long form story trend on TV went on, the more I found I wasn't as into it.
*they being HBO at first, then others wanting to get on board.
Overall, I think it's trying to put categories around things that are really a spectrum or maybe trend or even just method. There's something that Breaking Bad did that The A-Team didn't that you can see bits of in Babylon 5, but also in ER, but not as much in either as you can in the Sopranos and Game of Thrones.
There were a huge number of*... late 90s/early 00s action/adventure (often sci fi or fantasy) shows --usually in first-run syndication-- that I think were trying to catch the wave that Hercules/Xena/Baywatch were riding. A number of them were straight forward 'put scantily clad pretty people and wire fu action in front of viewers as cheaply as possible' shows, but a number had interesting premises. Earth: Final Conflict and Total Recall 2070 were personal favorites (as was the Beastmaster series, but because I liked the movie, not because the series was especially well written/interesting premise) that I think could have gone farther with some better attention. I don't recall even early Andromeda being notably... notable, although I certainly think it had more promise before Sorbo started making demands.Weirdly, I always think about Andromeda and Earth:Final Conflict, two shows that started out great, only to turn into utter and total crud.
(For different reasons. E:FC ditched the lead actor and the good writing and most of the interesting serialization to chase "Derp Action" after the first season, while Andromeda got totally Sorboed.)
*ugh, how to categorize these...