No. (the first one, haven't seen the second)
This "Dune" is not good. It's pretty, but stupid.
For one thing, just one little thing, what's the Baron's guy's name? Not the Feyd-Ruatha/Raban amalgam. The mentat.
No one says Piter's name!? If you haven't read the book you wouldn't know WhoTF that character is.
- - - -
I could go on and on, but what I really want to say, what I want future filmmakers to hear, is just this:
Just film the book.
Don't change the dialog, don't change the characters, don't add scenes and for fuck's sake don't delete any! Just film the book. Don't second guess Frank Herbert. He lucked out, made a masterpiece, and a whole Universe so real you can taste it. (the rest of the series not so much, but "Dune" itself is a window onto an alternate Universe.) You wouldn't hack up Shakespeare, you're not going to improve on Dune. Just film the book.
Whew! That was bottled up for a while.