I'm barely even going to mention the bubble wrap monster I think that's beside the point. If you can't get in the zone and find a guy writhing on the floor in green bubble wrap a little bit spooky then that's on you.

The Ark in Space is a very solid serial. The change in tone is immediately apparent - it's darker, it's more tense, and the monster of the week does so much worse than just kill people. Where Robot felt a bit like "the new guy does a Third Doctor serial", this feels like start of the Fourth Doctor's run finding its own identity.

My main complaint is something that comes up more than once in Classic Who. The plot is "Oh no! We have the stop the aliens killing these humans!", all said whilst quietly glossing over the fact that the aliens are taking revenge for something some humans did first. I think it would be more interesting to acknowledge this