re: Constraints of time
I agree. They didn't even mention the carbon dioxide problem during A13. Also when they were talking about the big Russian rocket the CIA saw on the launch pad they never mentioned N1 and kept showing film of the Proton. As much as I liked this show, I think they were a bit sloppy at times.
For anyone who hasn't read the book it has all that and much more in it.
There is enough material to do a whole series. It could start with one show that goes through Mercury, the next on Gemini, and the last on Apollo and the shuttle through Columbia's loss.