base property used to refer to 3D models

[jerstlouis]

The base property is oddly named as a reference to a 3D model. Could that be something like model?

However, it is not clear how referencing a 3D model is within scope of this Moving Features API.
Could a separate API or conformance class perhaps add this capability?

The ability to reference 3D models from point geometry is also something being considered for OGC API - 3D GeoVolumes, with a /models/{modelId} end-point, where the content-type can be negotiated using an Accept: header, rather than being available in a single format (OGC API Web Guideline Principle 9).