I've only seen a bit of the season 3 trailer. My initial thought about the retro episode was, "This could be fun."
I was thinking maybe it would be referencing older shows like Tom Corbett Space Cadet. If so, someone would post about the different references, and I'd Google the references and learn more about an old show / story and I'd be pulled down the rabbit hole learning about these old shows. LOL.
My other thought is SNW is an anthology of different writers and stories, like "The Science Fiction Hall of Fame" series of anthology books.
You get treated to different ideas and writing styles.
Of course, there may be an episode here and there that you don't connect with, but IMHO this is a great way to explore Sci-Fi as you never know what's going to happen next. :)