One of my favourite enhancements in Revit 2013 is Interoperability. Autodesk has made a huge step forward in addressing Interoperability with Microstation, enhancing AutoCAD interoperability, DWF export iimprovements, IFC interoperability, and 3DS Max.
Revit 2013 and 3DS Max Design 2013 interoperability is very promising.
You can now directly link Revit files into 3DS Max Design and load selected views. You can also override material in 3DS Max and retain 3DS Max material settings/parameters when you reload Revit link file view. You can also add high level of detail to curved objects to make them smooth in 3DS Max. See following video from Autodesk.