A major selling point was the vast library of 3D objects:
Bundled installers that compromise system security. Lumion Pro 3.0.1 32 Bit
Actively using a version this old also isolates a designer from modern collaboration pipelines. Legacy versions cannot open files saved in newer versions of Lumion, and modern CAD or BIM software (like current versions of Revit, SketchUp, or ArchiCAD) use updated file formats and LiveSync plugins that are entirely incompatible with Lumion 3. The Evolution to Modern Architecture A major selling point was the vast library