I don't count Jones in my criticism. But I include season 4 in my criticism because that's when he was fired, even though we didn't feel the drop yet. He clearly had a different opinion about how scores should be done, and was fired because of it. I enjoy some of Jay Chattaway's scores. McCarthy less so.
In season 1, Ron Jones' music alone could turn a crappy episode into something watchable, such as When the Bough Breaks. Early on, I could always detect a Ron Jones episode just by the opening notes in the episode.