https://www.cnet.com/news/the-americans-finale/

I don't envy anyone tasked with writing the finale to a popular television program. Pleasing everyone is probably impossible, so I imagine that you stick to pleasing as many viewers as possible. Give the characters some sort of resolution (but not always redemption), don't make it too neat, but tie up most (but not not all) loose ends that have left viewers guessing. And whatever you do, don't leave them asking, "That's it? That's all I get?"

It's a terribly tricky line to walk, and the TV finale graveyard is littered with hits, misses and the, well, controversial. There's Six Feet Under's breathtaking death-apalooza, Lost's perplexing letdown and The Sopranos' quiet last meal at the diner. (Of course, Newhart's boomerang back to The Bob Newhart Show is TV legend, but for entirely different reasons.)