I think the lack of a satisfying climax is a pretty staggering error. What the hell was Denis thinking. People complained about the MCU having 20+ films that seemingly just teased the next one but at least they all had *actual endings* in and of themselves. Same for ANH, ESB, TPM, AOTC, TFA, TLJ, all the Harry Potter films, FOTR, TTT, and on and on and on. Other book adaptations that split single books into two parts were still able to concoct some sense of resolution at the end of the first parts.
Hell even splitting the Hobbit into *three* movies PJ still gave us an ending after AUJ and DOS and that was even knowing that people just had a relatively short 12 month wait between chapters.