These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Contested Sequel: Though not being much of a sequel (since Lupin III runs on zero continuity), its glaring difference in tone compared to its anime entries have fans either decry it as a disgrace to its source material or embrace it as being all-round enjoyable.
Germans Love David Hasselhoff: The movie was a failure on its initial release in Japan for being too cartoony and not having Lupin's adult humor. In contrast, Americans loved it and it has better DVD sales than the series.
Moe: Princess Clarisse is popular among fans, was featured in early fanworks and doujinshi, and sometimes even said to be the first "moe" character.
Misaimed Fandom Princess Clarisse was not intended to be the Trope Codifier for moe. Miyazaki despises that trope. As a self avowed feminist, he thought that the concept of Moe to be a terrible fetish that devalue females.
Vindicated by History: When Miyazaki made this movie, he put his own spin on the Lupin III character, toning him down from the raunchier, more manic version depicted in the manga and animated series (apart from the first series, which was also somewhat toned-down since he and Takahata were the showrunners for about 2/3 of it). As a result, it flopped in Japan when it was first released—the people who liked Lupin III for what it was were turned off, and the people who didn't like Lupin III didn't have any reason to watch the movie. It was only in later years, when Miyazaki gained recognition for his original works and more people watched the movie without any prior Lupin III experience, that it belatedly gained a reputation as a classic.