Of course not and that's why I wonder how it will look like on them. Still the physics is clear. The sole reason of the aerodynamic features is to push the car to the ground hence limiting the air time hence shortening the jumps. That's simple logic.
Maybe I do but while You are generally right it doesn't apply absolutely. Is Ogier in R2 spectacular? For sure he is. But is he more spectacular in WRC car? For sure he is or would You prefer to see him in R2 car instead of the WRC car? That's why the car plays a role in the spectacle. We have to wait and see but simple logic says that the new cars will slide less and will jump less because that's the only way how to use the aerodynamic features to make them faster. If not You can fire the man who designed the aero package.