About model and data exchange with 3rd party solutions: Revit, Solibri, dRofus, Bluebeam, structural analysis solutions, and IFC, BCF and DXF/DWG-based exchange, etc.
I have just upgraded to CS3 and one of the main things that have really impressed me is the handling of the Interface to maximize screen estate. Here's an article analyzing the logic behind it…
It IS a wonderful interface!
Archicad users annoyed by Archicad's clunky and outmoded interface might also study the UI cleverness of modeler/renderers like LightWave and Maya.
