Every office & manufacturer has a CAD library. If you want to convert to a Revit detail component it is manual process with tedious renaming of linetypes, Hatch patterns, visibilty setting & cleaning up too small elements.
If you could automate process with rules\mapping\scripting tool like with the DWG exporter you could process hundreds of cad details that then make Revit far more attractive to Autocad diehards...and maybe keep the benefit of years of design knowledge.