"The Formula"
As I look at the Bond films (as distinct from the novels), Dr. No was just another adventure movie, From Russia, With Love introduced the idea of gadgets (the attaché case), and Goldfinger capitalized perfectly on a mixture of adventure & gadgets (the Aston DB5). All of the Bond movies after that became increasingly gadget-overwhelmed to the point first of complete loss of real-world credibility and later of sheer fantasy/self-lampoon.
Persons who like the second film tend to do so because it is the most real-world credible, and indeed Ian Fleming spent more time working on the authentic tie-ins of From Russia, With Love than he did with his other stories.
So I would say that Goldfinger (the movie) got the Bond-film "formula" just about perfectly balanced. It was sad that Fleming died shortly before its completion and was unable to see it.
In addition to sliding increasingly into gadgetdom, the later films also departed more and more from the novels of the same name. Some of that was the result of the social standards and audience expectations of the 1960s+, as IF's novels were clearly in 1950s' idiom and quite "politically incorrect" as a result. Sometimes because the original villains, like SMERSH and Al Capone-mold American gangsters, were obsolete.
Michael Aquino