I enjoyed the show although they might have wanted to wait a couple of months to finish it as not seeing the rides in action made it feel a bit incomplete. It'd be great to see Discovery do a follow up to this after the rides open and see how they're received. It was also interesting how the managed to contrast the three different coasters even though they're all woodies it put across the point that they're all very different which I liked.
Good show!
BTW, there’s a torrent version of this and Megastructures available now.