Previews for 3D assets are crucial as they provide visual references, allowing users to quickly identify and choose suitable assets like models, materials, IES files, and HDR/EXR/OSL files, without needing to individually open or render each one.
The ability to assign multiple previews to an asset allows users to view different angles or facets of a model, or link additional files like descriptions or proxy files, providing a comprehensive overview at a glance.