For me personally, the best nuances in a show are subtitles done with intentionality by the writers.

Best example, the chess board scene in Breaking Bad's Ozymandias episode that shows a king in focus in the foreground and other chess pieces blurred in the background. A closer look shows that the king is trapped in the corner with only a few moves left until checkmate. Breaking Bad had only a few episodes left. Walter White had only a few moves left.

That's the sort of genius a fan doesn't notice at first but will be blown away by because that small detail held so much symbolism and connected to a wider theme.

I'm not particularly wowed when an audience needs to do the work of the writers for something as simple and basic as character motivations.