Currently, when exporting to DWG from Revit, the Cut/Surface Pattern of Structural Framings, Foundations, Columns is placed in the same layer as the structure itself. It should be possible to assign a separate DWG layer to the Cut/Surface Pattern for these structural elements, like it is possible for Walls and Floors.
This option will make working in Revit-exported DWGs easier for the users, as the visibility, color, and pattern of the hatch layer will be controlled directly from AutoCAD.