If a scene referenced by a node/socket is the current scene, then initialize the generated version with the current scene
If it's not, I don't think there's a good way of handling that aside from importing an entire scene from a packaged blend file. Might push handling this case to a future release
Automatically handled with nodes where you don't explicitly need to set to scene in the first place (only the defocus node doesn't have this behavior), pushing to later release