Inexcusable not having Jane Freeman in the final episode.
With the age of the cast, and the BBC's dislike of the show, every series had to be considered to possibly be the final one, so you have to make sure characters from the beginning are present - purely so their appearances span the whole length of the series.
As said before, I would have thought some footage could have been included, just so she was in the programme. Afterall, they (thankfully) included Peter Sallis in it, even though he wasn't involved with most of the general filming.
We really did need a proper final show, with Sallis, Freeman and also Thornton, but...
I really did hope last year they would just make one final special to say goodbye to all that, which would have also tied in with the 40th anniversary.