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.
YMMV: Nausicaa Of The Valley Of The Wind
Adaptation Displacement: To many a Studio Ghibli fan, it's fairly unknown that there even is a manga of Nausicaš. Although the movie is really just a 2-hour compression of the first quarter of the manga.
Anvilicious: Of the Green Aesop variety, mostly for the film though. It gets a bit more complicated, if not somewhat subverted towards the end of the manga. Specifically, the question of whether or not the Master Computer's plan to artificially restore Earth's old ecology is just as bad as the callous environmental destruction that preceded it, since it would mean the deaths of the countless biotechnological creatures (including "Humans") who have made a life for themselves in the new world.
Nausicaš herself is much colder and dire than the movie, fitting for the more nihilistic tone.
Broken Base: Despite being uncut and more accurate, Disney's dub of Nausicaš still has its share of harsh detractors, with some declaring that it still fails to do justice to the original Japanese. You'll have to decide for yourself if you like it or not.
Jerkass Woobie: Possibly a number of characters, but perhaps most notably Kushana. Introduced in the film version as a seemingly stereotypical evil queen ("Nice valley. Think I'll keep it."), her status as an apparent Card-Carrying Villain is quickly subverted. This apparently was deliberate on the part of the writers: Miyazaki describes Nausicaš and Kushana as "two sides of the same coin", largely differing in that Kushana has "deep, physical wounds".
Macekre: Warriors of the Wind again. The incident is why all Studio Ghibli licenses contractually stipulate that not a frame of animation is to be changed or cut.