> Don’t have temporary people make permanent decisions

IMHO, this one line summarizes remarkably well why Hollywood wrecks fictional universes: Star Wars, Game of Thrones, Fantastic Beasts, DC Universe, and even parts of the Marvel universe.

I see the absence of an auteur capable of respecting themselves and therefore their audience as the root cause of clichéd moves such as "war is bad so let Wonder Woman kill the God Of War". Clearly, the person making such a decision simply does not have a reputation to uphold; what remains is optimizing ticket sales, one movie at a time.