Add Page and Node properties to visualization filter capabilities

It would be very useful to have the same mechanism as implemented into document properties on the granularity of pages and nodes. Today it is possible to set up filters etc. addressing the globally available document properties. I need the possibility to be able to address properties in the context of pages and nodes (customized visuals). I have implemented a ConfiguredVisualFactory<MapChart>. To be specific, I would like to be able to set the data filter to filter on node property values, i.e. properties defined in the context of this specific visual node. My implementation of the configured MapChart would create and set the values of these node properties. This would make it possible to have individual filter behavior for configured MapChart's on the same page.