If you loved the graphic novel you’ll love the series and go out of your way to suspend disbelief. If not, it’s unwatchable. I know because I reveled in Asimov’s Foundation, produced by Apple, while so many hated it.
Sandman is pedantic, pretentious,
but worst of all predictable. Where diversity of culture comes naturally from a piece of literature it’s transformative. That’s it is the female Captain Marvel who emerges as the most powerful superhero, upending patriarchal expectation, does not shock. In Frozen the insignificance of the male characters in solving the essential conflict does not shock. But! When a piece—in this case an adaptation—patently goes out of it way to manipulate the audience? It feels fake and, well, manipulative.
As I said to start: if you know and love the graphic novels you will love this. However, very few new fans will be turned on to Gaiman or this series. The audience won’t build when it sees the levers pulled behind the curtain to manipulate its emotions.