We do have this feature on our backlog, but do not have a timeline for it as yet.
We will update the status as soon as we have an ETA.
This has been implemented and a documentation update is coming very soon. As soon as the docs are live I will change the state to ‘completed’.
Each Azure Automation account can host one partial configuration per node, so if one partial represents an application and another represents a baseline, you would need two automation accounts. You could have one account for all your application partials and one account for all your baseline partials, and consistently deliver from the two accounts.
I would also recommend considering composite resources. Feedback from the DSC community has been that composites provide a more effective solution because teams can align to a single test pipeline. I will also publish information in the documentation update to explain this in detail.