Direct connection of ArchiCAD with Google maps (Apple maps, Bing maps etc.). Show map as trace&reference in ArchiCAD for correct location of the project. Possible export of 3D data from map?
There are several videos appeared in Youtube showing how to use maps in Blender or even extract 3D cities.
Why not to have something similar build-in into ArchiCAD?
And another thing - support of national coordinate systems. Like OS grid in UK. It's very often needed for projects approval.