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Limiting my complain to recent Pixar movies: I think Coco, Soul and Inside Out are fairly obvious and not multi-layer. Definitely they talk of "difficult" subjects to kids: death, depression, regrets about ones life. They are not much fun either and the story is rather weak: often predictable, déjà-vu moments (Soul and Inside Out are strangely very similarly built with a meta-world in both), repetitive loop of slow a…
Frozen? Elsa makes absolutely no proactive decisions for the entire movie. She is completely reactive.
A quite strange Japanese anime I recently watched with my kids was "Ginga-tetsudô no yoru" (https://www.imdb.com/title/tt0089206/?ref_=fn_al_tt_1). I warn you: it is really slow and dreamlike, and is about death. One daughter slept during the movie while the younger one watched till the end. The morning after we were discussing about the movie during breakfast. I love that! Never happened with a Pixar movie: they are just too obvious. The analysis is made for you. And for the more recent ones they are not even fun. Of course they are beautiful and polished but too slick for me.