Currently, when you click the Dataset's View Metadata button, the item's metadata is displayed.
However, if there is a Feature Service item, there is usually more than one layer inside. These sublayers have their own metadata, describing the data of each layer.
In addition, when publishing Enterprise Geodatabase data by reference (using ArcGIS Enterprise services), the metadata of each layer within the service is linked to the metadata within the geodatabase, which is great.
Unfortunately, this service-level metadata is not available in the ArcGIS Hub data catalog because it references item metadata.
Is there any development planned in this area?
This is a great idea, you should put it in the ArcGIS Hub Ideas portion of the ESRI community?