Yeah, I didn't realize it (because I already knew the story) but now that I see people questioning the shields I'm wondering if they should have explained just a little more.
For example, if you already know how the shields work when you see the shields flash "red" you know that it is because something moving slowly is going through the shield. But, if you didn't know any better you might think that "red" means that the shield is losing power or something.
Yeah, there are a LOT of cut scenes including training scenes. I'm guessing the shields and fighting techniques are further explained in some of those scenes.
Just found out today there was an additional Yueh cut scene I didn't know about. Seems like there were separate personal, emotional scenes with Yueh/Jessica (where they lament over the Harkkonens having his wife) and Yueh/Paul (where he gives Paul an Orange Catholic Bible). If they had shown those then the betrayal by Yueh would have been much more emotional and powerful, and the way he set up Jessica/Paul to escape would have made more sense.
This really should have been a series and not some movies trying to cram a huge novel in
I still stand on the fact that there was no way to make it of large enough scale with series funding. The entire 10-episode first season of Game of Thrones was made with just $50 million and that's one of the most expensive series, whereas this one Dune movie cost $165 million. You ain't gonna get those incredible space scenes and scale in a series.
And then how many episodes are you going to go through of people talking and plotting and training before you get to the first real fight scene? The ambush on Arrakis would have been....Episode 6? Episode 7? You would lose everyone but the fanboys before you really got going. Game of Thrones built a casual audience by being pure sex/violence right from the opening episode, Dune didn't have that sort of cheap trick so you needed the payoff of the entire movie all at once to get the broader audience hooked.