We're not using it not production just yet as it is in beta indeed, but we are in Proof of Concept stage.
I think I got what I really wanted - a confirmation from you that the feature is on the roadmap - we need tools support.
As far as referencing, I'm watching how it develops, but I would prefer the least verbose, Docbook specific option.
There is a very recent descussion on Docbook list on this very issue.
Currently, for PoC I don't need the indirection, but in Production I would needs sth like Olinks or Xlink to have a maintainable, single place for resource locations.
One last things is, if we had resources on our side, is there a way for us to have similar functionality to maps managers by customizing the the Document Type Association in Oxygen?