> The guy playing John Dee is David Thewlis, one of the best cinema actors of all time.
He's Lupin in Harry Potters, for a quick reference (for others). I take it you've seen The Landscapers? Exceptional performances from both Thewlis and Olivia Colman. I came to Sandman as an adult, and I was not a comic reader as a child. Maybe that's why I love it, not having the fluency to recognize the uneven writing and things you listed as weakness? I remember being absolutely floored when I read the first few, and also being convinced it could never be successfully adapted. I thought there were so many nuances, so many allusions to myths and folklore woven into Gaiman's writing that a film adaptation would absolutely butcher the original material by its inability to render all the shades; (e.g. the Cain and Abel sub-story is played for laughs and misses the sinister undercurrent - it is after all a story about a man murdering his kin and lying about it to God).
So far I'm pleasantly surprised by the series. I thought the casting and costuming of Morpheus dead-on. In the book he's drawn as a tall and pale Gothic priest. I appreciate that the production design tried to keep close to the visual framing in the book, I look at each frame and I could see the original in the derivative.
I'm worried that the complexities of the books and its branching anthologies, after the world-building phase is done, will be reduced to stupid modern clichés, e.g. "when dream dies humanity would die" and similar treacle. For example how are you going to make sense of the story where Dream meets his friends every 100 years for a drink at an eternal tavern, I forget who was there, Newton and Pascal? That's not an episode to view but a novella or in its best form, a 20-page comic.