What was missing? Whilst they showed the Court victories of Robert Murat, the McCanns and the Tapas group, they barely mentioned the long running claim against Goncalo Amaral that he eventually won in Portugal's highest court.
The Fund. It wasn't just the reaction of the world's media that made Madeleine's disappearance a phenomenon, it was the huge amount of cash donated to the parents from people all over the world. It ran to millions and it wasn't used to pay private detectives apparently, Brian Kennedy states quite clearly that he paid for Motodo 3 and Oakley.
Smithman. Yes he gets a couple of mentions, but more time is given to Jane Tanner's sighting and the bonkers artist who drew the photofit, the sighting that was dismissed by Operation Grange. They also claim that Mr. Smith has since said it wasn't Gerry. That I would take with a giant pinch of salt.
The ultimate effect the documentary will have I think, is to confuse the matter even more. The final episodes leave the viewer sympathetic to the parents and hostile towards the original investigation and Goncalo Amaral. Depending on whether the viewer retains all the negative McCann evidence in the middle, which is doubtful, because it ends with a Rothley village group hug and you would feel like a shit if you said anything unkind.