re: Just finished rewatch of BSG for first time since it aired. BSG >>>>>>> Star Trek

What do you mean by Star Trek? The original series? All the series combined? The movies what? You mention Picard, that and Discovery are complete garbage imo.

Yes, BSG has a series long story arch. That's a development for TV shows that became more common around 20 years ago. Star Trek (aka TOS) and its various sequels/spinoffs were all before that became the main narrative structure for shows. Star Trek was straight up a one episode on its own show as was TNG basically (minus a few 2 parter "cliff hangers"). DS9 started that way but had more a season long story with the Dominion War in later seasons.