I just watched the final part of the programme and I think they could have improved the experience in a couple of ways.
1. Make the crew fly the sim in full wartime flying kit with the a/c suitably cooled to a temp somewhere near what was experienced on the night. (Why did they make the a/c see through? With todays mini-cams they could have skinned it)
and
2. They could have put some feel into the flying controls. Lucy manouvring the 'a/c' as if she was using a toddlers toy steering wheel.