I actually feel that Jean was a very good showrunner, but just went on too long. Season 16 pales in comparison to its predecessor, but it was still a generally consistent season with several very good episodes. In seasons 17 and 18, Jean really lost it. Despite what other members say, I think that 18 was a considerable improvement over 17. Its lows were just as low, but its highs higher and more frequent. I still consider no seasons of Jean's worse than season 11, but 17 comes close. Jean started out with a fresh change with season 13, which was an inconsistent season, but with many great episodes, putting it at my second favorite Jean season. 14 was much of the same as 13, but IMO, not as many greats in there making it my third favorite Jean season. 15 was my definite favorite Jean season, because, it was consistent with the greats of the previous two seasons, and it had plenty of memorable episodes, some even emotional. I already went into detail on my opinions for seasons 16-18 so I'll stop this rambling post now.