Not op, but I thought that the roles for Rabban and Feyd were absolutely ham-fisted acting in the Lynch version. Maybe there was a goal to communicate complex character elements in a highly condensed way, but it just comes across as clumsy to me.
Baron was fine if not better in the Lynch version.
Note that I watched the Lynch version in a theater in the 80s and recently rewatched it, and my feeling about the acting portrayal of these two characters was the almost exactly the same then and now — painful to watch.
I thought the new movies were absolutely awe inspiring. I bounced off the old movie pretty hard and thought it was some weird joke I hadn’t been invited in on.
The old movies felt like a caricature of the books. The evil characters were ridiculous.
In the new movie, I only disliked Momoa for playing himself again.