So that was very different, but I liked it. A very nice send-off. A chance for Moffat to very ostentatiously put right several mistakes of the past, especially the botched afterlife plot from Capaldi's first season. All the interesting notes hit well. Very nice deferred central decision in the end. Excellent gesture of putting back everything exactly as he left it when he took over. One thing he got wrong -- the Christmas armistice was in no was the only time that happened during a war. It happens all the bloody time. Human beings, as a whole, hesitate to kill people they haven't been properly introduced to, as Pratchett said; they stop fighting as soon as you'll turn your back on them. On good days.