Now this season of Doctor Who has finished, I thought I'd take a stab at ranking all the eps. Highly personal and no doubt idiosyncratic, of course.
1. It Takes You Away. I really enjoyed this one. I liked the move between the three settings (each with different rules), something that Doctor Who is particularly well suited for. I thought that Whittaker's Doctor worked better in this ep than any other - she showed how a 'nice' Doctor could still be effective.
2. Kerblam! Lots to enjoy here. Cute/creepy robots, good tension and action, the sort of social satire Doctor Who can tackle. Some of the resolution was a hot mess, but at least it was a fun ride. Oh, and bubble wrap!
3. Demons of the Punjab. A solid historical. A period of history not so well known and worth highlighting. The aliens were particularly fitting for an ep that aired on Remembrance Day. Emotionally, not hugely complex or surprising, but effective.
4. Rosa. It was actually very well done, and got a lot of things right. Especially relieved that Rosa Parks kept ownership of her own actions and decisions. But there are some serious flaws, which in some ways run deeper here than in eps I rate lower. Ultimately it's not the kind of historical Doctor Who can really do.
5. The Witchfinders. Not a spectacular ep, but Alan Cumming's plummy King James I was a joy, and it was nice to see the Doctor taking decisive action.
6. The Tsuranga Conundrum. Solid midrange ep; not a lot to distinguish it in either direction.
7. The Woman Who Fell to Earth. Decent intro to the new Doctor and TARDIS crew. But the plot was fairly dull and the dialogue a bit dire. With hindsight, the season's major failings were on display from here on. (Plus, disappointing that they fridged the most interesting supporting character.)
8. The Ghost Monument. The more time I've had to think about it, the less I find I like it. Didn't feel terribly dramatic, didn't even feel much like a race. You should be able to do more with the idea of the TARDIS as a ghost monument than just use it as an excuse for the Doctor to give up for half a minute. Ultimately it's... fine, just there's not a lot to entice into a rewatch.
9. Arachnids of the UK. This one just rubbed me the wrong way. The lack of even an attempt to stop Ed Sheeran, the strange priorities concerning the spiders' fate, the trivialising references to Trump. A shame; the first act had some good material.
10. The Battle of Ranskoor av Kolos. I may well be holding this to a higher standard as the season finale. It was just dull. I never felt any real tension, every problem had a pedestrian solution, hooks never went anywhere. Tim Shaw remained an unexciting villain (who lost an armed stand-off with Graham, I mean how was he ever a leadership contender for a warrior people in the first place?). The Doctor's position on killing remained morally incoherent and undercut by the ep itself. The worst season finale since at least Trial of a Time Lord in 1986.
I am not particularly surprised to observe that I've rated every story written by Chibnall below every story written by someone else. Looking at the average ratings, I rank this whole season to be 28th out of the 38 seasons of Doctor Who so far. That feels about right.