Revit gives users numerous options to model piping for plumbing, HVAC etc. Once the piping is modeled the piping isometric extraction is way too primitive compared to Autodesk Plant 3D or other plant design software in the market. Most of our customers expect a very detailed piping isometric drawings giving the complete fabrication details, BOM, piping parameters etc. We have tried to convince our customers to switch over to Autodesk Plant 3D for piping portion, but none of them agree as they want an integrated 3D model in only Revit. We feel that Piping isometric extraction has to be improved a lot in Revit so that piping isometrics can be extracted in line with what we get from Autodesk Plant 3D.