Persuasion is one of the JA novels I first read 'fresh', without ever having seen an adaptation beforehand. Here are the most vivid of my first impressions - the reactions I still remember all these years later.

Anne ought to stop dwelling on that jerk Wentworth, and encourage that nice Captain Benwick. Oh, here's a plot twist that prevents that, and she and Wentworth are gravitating toward each other after all. This is going to look bad from a mercenary point of view, regardless of her actual reasons. She wouldn't marry him when he was starting out, but will now that he's well-off. Surely she'll regret that she wasn't there as his helpmeet while he was making his fortune? No, that's not mentioned in the ending. How odd.