Just seen the Kerblam! episode. I'm liking the Doctor more, not that I hated her to begin with mind you. The story was OK, but I feel no need to ever see it again. Yaz could walk off a cliff for all I care. I felt more for any other character in this episode, in fact it would have been great if they'd swapped her out for that girl who got killed.
I felt a little WTF when the workforce was supposedly going to be replaced with 100% "organic" when operations restarted. So that means that the murderous terrorist got what he wanted in the end!! What the hell BBC!
On more minor points the Kerblam boxes shouldn't be in just one size. At the start it was mentioned that there were 100,000 workers and then later only 10,000. Perhaps the 10,000 is the human portion, but still, 100.000 complete, doesn't sound like very many for a interstellar operation.