Hacking Possible to export complete SMG worlds to a 3D model?

[EpicLPer]

I'm currently trying to port over some worlds of Super Mario Galaxy into Unity for a project of mine. However I'm currently trying to figure out how to export whole worlds from Super Mario Galaxy (if that's possible at all) including textures so I can then import them into Unity or open them in Blender.

I know how to extract models and how to convert them from bdl to another format but this would be super time consuming if I'd have to do that for ALL parts of a map. Any ideas?