Family Data instancing has been added as a Beta level feature in the Revit Connector. In general, this will take any replicated Family Data item from Revit and represent it once in USD as geometry. All other locations will be instanced geometry. This saves on space and increases general RTX performance.
There is a known bug where sometimes the data will be flipped in orientation. This may occur if family data has been re-used but re-oriented. A fix is in process for a future release of the connector.
To turn on Family Data instancing, just check the box in the Settings dialog of the Revit Connector.