Since the finale, however, a number of people have asked whether or not it will return for another season. Personally, I’d love to see more of the beautifully developed characters, especially the Garvey sisters of Ireland — but at the same time I kind of hope it doesn’t come back. Yeah, mixed feelings. I cherish the idea of one perfect self-contained season, which we’ve seen with the likes of “Normal People,” “The Queen’s Gambit,” and “Maid” — all popular miniseries that could have been extended but were not. Your TV GPS, Globe TV critic Matthew Gilbert’s look at the week...