I haven't written about it at length anywhere, but to summarise: I think Chris Chibnall isn't a science fiction writer, and would be better off sticking to other genres (detective fiction, for instance - his first series of Broadchurch was excellent). Despite occasionally entertaining bits and pieces, overall the series under Chibnall has taken a nose dive. Far too preachy and joyless. Whittaker is a good actress, but she's been sorely underserved by poor stories. I hope that once Chibnall departs things improve.