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.
Too Cool to Live: Lufy is the biggest Badass in the first movie, but she dies early on in the opening battle. Averted with the sequels, where she's brought Back from the Dead and is treated as the protagonist.
Unfortunate Implications: Eternal Story suggests that the New Lifeform a human male would suppress certain emotions in Solenoids and lead to peace between the two races. Since one of the races is made entirely of human women, including Rabby's dream where a bunch of nude, frolicking women are struck down before she goes off with a boy, it comes off as a bit unfair towards alternative lifestyles.
In the ED (end-credits song) of Eternal Story, the singer assures her boyfriend (in Gratuitous English) that she's not some kind of feminist.