They mention the planet in this episode in other Borg episodes.I watched The Neutral Zone today. I jumped ahead. There’s still several first season episodes I like that I think were pretty good. But I wanted to see this episode. That might be another episode to list as prerequisite for Picard. It was always a favorite of the first season for me not only for the Romulan’s return, but for the cryogenic B story. What I’d forgotten was that Maurice Hurley had intended this story to be one of three that’s continued in the second season that introduced the Borg. There was a writers strike though and this episode didn’t have time for a polish so Hurley only had a short amount of time to get it ready. The Romulan and Federation outposts along the Neutral Zone had appeared to have been scooped off the surface. That’s a remnant of the Borg story I’m sure. Upon this re-watch, it also felt like a direct sequel to Balance of Terror and I like that aspect of the story too. Though Kirk had another encounter with the Romulans in a Enterprise Incident, this episode has the same feel of Balance of Terror.
So this marks the beginning of Picard’s interaction with the Romulan people which leads to the events in Picard.
Also, while I enjoy this episode, it was the height of the "Roddenberry's vision", sniffing their own farts again cause "ain't we so great in the 24th century?!?" attitude.
Picard was 100% a douchebag when interacting with the 20th century folk. I mean, for such an advanced person, he was a total dick.
But, that stuff went away after season 1, thankfully.