I wouldn’t count on it being a thin adaptation, particularly considering the director and his history of extremely thoughtful cinema. As for the trailer reveal

I wouldn’t count on it being a thin adaptation, particularly considering the director and his history of extremely thoughtful cinema. As for the trailer revealing little plot, Dune’s themes are so detailed and nuanced that it should not be surprising if they fail to convey them in a film trailer and fall back on the more easily explainable plot points.