How would people feel if Hollister or some of the non-regulars were to appear again in Series X? And how do people now feel bringing everybody back worked in VIII? I was watching Cassandra again the other day and it struck me how this is arguably the only episode of that series that could have been made, without too huge a rewrite, with just the main cast members. And also that that would have meant losing the, 'You are the sunshine of my life...' section which is cringeworthy. As I consider Cassandra to be by far the best episode of that period, it seems a shame that the show strayed from the 5 or 6 main people.