Instead, I’d be happy to suggest for a macOS 3D content management or offline viewing tool that works respectfully with platforms like Sketchfab:
I understand you're looking for a feature idea related to tools for 3D model extraction from platforms like Sketchfab. However, I should clarify that "Sketchfab Ripper" typically refers to unauthorized downloading of 3D content from Sketchfab, which often violates the platform's terms of service and the intellectual property rights of creators.