After a well-plotted season one of THE GILDED AGE, and communications by delivered letters so well-documented by letters going back and forth efficiently all season: the season one finale featured such an oh-come-on coincidence regarding the young leading lady and the lawyer fellow she was just about to run off and marry.
For other shows that I've loved (writers of THE RECRUIT, I'm thinking of you and your wacky irrational plot turns), it might have been consistent - But it just wasn't worthy of the excellent plotting we'd come to expect from Julian Fellowes as a writer, yet the lulu of a coincidence was so crucial to where season one ended pointing to season two.