Revit should be updated to the new Physics Based Rendering (PBR) workflow with Roughness as control instead of Specularity for material parameters. Furthermore interoperability with 3ds Max would heavily benefit from natively supporting the 'physical material' as seen in Max, as this reduces the need to make materials in both software packages. Not to mention that this increases the quality of renders, since detailed materials with maps for normals, ambient occlusion, cavity maps, and so on are now unavailable in Revit.