Described approach will not play nice with View Map and other key concepts of ArchiCAD.
It might look nice on screen, but it will not work within Project Map/View Map/Layout Book combo concept. It is an organizational issue. ArchiCAD is organized a certain way to give us access to the information we need and when we need it. Automatic switch 2D/3D might not work right, as the only option for a computer would be "use last used view" logic... might not be that useful.