I think Doggett was in a handful of good Monster-of-The-Week episodes, but at that point the the series had gotten way too dumb that Mulder couldn’t have really made it much better. I think the series was way too in love with its own mythology, which was, frankly, pretty mediocre. The mytharc had become so diluted and silly that I just can’t watch most of those episodes anymore, even before it got bad