What is the method to handle all content, not specific UUIDs

Problem/Motivation

I have a small blog and i want to automatically import/export all content of certain entity types, either by automatically updating the info.yml with UUIDs, or just having a way to calculate all content as a dependency. What would be the best way to do this?

If this is not currently possibleI can provide a patch or custom module with some guidance about how you want it to be done.