I think I understand where you're coming from. Perhaps it had something to do with budget constraints. Acc. to Poliakoff, they filmed the entire three-plus hours of the show in one month, December 1997 and maybe a couple of days into 1998. The whole scenario was something of a rush job, and it looks to me as though a great deal of time and effort were taken on an amazing number of set changes as well as on photography and photoshopping faces into the already existing photos. This was a very impressive job for its time. Many of the photos in the story sequences were taken by Poliakoff's people and they are also works of art in themselves, and for many of them, I would never have known they weren't period pieces if I hadn't been told. The photo stories are what made it for me, anyway.
Sue