I didn't care for the first one either. It was eye candy yet fundamentally hollow imo. I am skeptical this one will be better, but i'll see it in the theater and try to give into the spectacle.
The first Dune had an epic soundscape, it was the first movie I've watched where I thought the audio was doing a better job than the visuals in pulling viewers into the world. I'm going to see if I can pay a bit extra to see it in a cinema this time, and hopefully find one that has a good audio setup.