WorldCoordinateSystem talks about a project base point and survey point

[Moult]

From the docs of IfcGeometricRepresentationContext: https://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/lexical/IfcGeometricRepresentationContext.htm

If an geographic placement is provided using IfcMapConversion then the WorldCoordinateSystem atttibute is used to define the offset between the zero point of the local engineering coordinate system and the geographic reference point to which the IfcMapConversion offset relates. In preferred practise both points (also called "project base point" and "survey point") should be coincidental. However it is possible to offset the geographic reference point from the local zero point.

This sounds like Revit specific language and doesn't make sense to me. Other software don't have a "project base point" and "survey point". In real life your model has a 0,0,0 point (which IfcMapConversion handles any conversion to map coordinates) and that's it. There isn't a single special "survey point".

Proposal: remove this language and deprecate WorldCoordinateSystem

Ping @pjanck