I don't really post in this forum any more but I just wanted to express my thoughts on the news about Chris Chibnall.
As far as I'm concerned, this is the death blow to Doctor Who. Russel T Davies was a fantastic writer/producer. Steven Moffat was even greater: a truly brilliant creative talent.
As for Chris Chibnall, I found every one of his episodes completely dull, and I absolutely hated Hungry Earth/Cold Blood. It was utterly, utterly dreadful. I wish I could get back the time I wasted watching those dismal episodes. I can't understand why Mr Chibnall has been invited back to write more episodes, let alone why they've given the whole show to him.
For me, this is the end of Doctor Who as a mainstream show. It has always been a cult classic, popular with the fans, and always will be. But if Chris Chibnall takes over, there will no longer be a wide interest in the series. It will revert to pedestrian and mediocre. I can well imagine it being moved to BBC2 in a few years' time when it becomes apparent that all the excitement surrounding the show has completely died up.
My choice of previous writer would have been:
1. Simon Nye ("Amy's Choice")
2. Neil Gaiman ("The Doctor's Wife")
3. Paul Cornell ("Human Nature", "Father's Day")
4. Tom MacRae ("Girl Who Waited", "Rise of the Cybermen")
5. Richard Curtis ("Vincent and the Doctor")
By the way, I've never seen Broadchurch and know nothing about it, but get the impression it is popular. As far as I'm concerned this is irrelevant. If Mr Chibnall's previous Doctor Who episodes were bad, they're not going to get any better. Mr Mofftat was producing gems like Blink and Empty Child before he took over. We have nothing like that with Mr Chibnall!