The effects were great. The sets were good, but not as good as the Lynch version. Stilgar, the Baron Harkonnen and Duke Leto were superb. The rest of the cast were flatlines, including Paul.
Villeneuve did a great job of creating an atmosphere of a future that's uncomfortably alien, yet human at the same time.
The adaptation is ok, so far, but I'm not digging the ecology angle. It's fairly important to the sequels that Dune's natural ecology is a desert planet. This becomes a Big Deal because in the sequels, the terraforming of Arrakis threatens to kill off all the worms and end the production of spice. It is an angle in the first book that Paul promises to fulfill the Fremen dream of a terraformed Dune, so I'm giving them some leeway for now. But there's that goddamn spectre of the story going Woke and turning into a lecture.
When the music is good, it's great. But there's a lot of "AAAAAAAAAAAAAAHHHHHHHHHHHHHHH!" that just drowns out the sound and goes on for ever. Got tiresome after a while.
So overall, a C grade, with moments of brilliance with a lot of meh.