Well some meshes are compressed on save. But you can't render them like that. Displacements would be the solution to that problem but that idea is not used much yet. If you want to see expoding meshes try LeoCad. ie: one lego button is used but in a 3d app all the round buttons have to be there. Those meshes are rather hard on Vue. The huge meshes anyway. I had to import them in pieces.