1) More consistent than the previous two. And I really liked how the thematic chapters were put before the narrative chapters.
2) This is one of the most interesting periods of papal history, and I was curious to see what the experts had to say. In fact, the papacy is mostly ignored and only danced around when it is mentioned.
3) England is in the section on post-Carolingian Europe. I'm sure they were trying to make some cheeky point, but they either forgot to mention it or else it was so insignificant that it slipped my mind.
4) Although well-covered in previous books, Wales, Scotland, and Ireland seem to almost completely vanish from existence.