Many languages have doc strings that allow you to quickly see what outputs are being generated by a function. I think it would be great if similarly, the list of "Workflow Outputs" are published so that when you add a sub-workflow you can see in the action pane what fields are being returned.

Sometimes it is a single "result" field, sometimes there are multiple "result, status" fields, or any other custom field names that might be provided by the sub-workflow. This would make it much easier to write transition aliases as we would instantly know what RESULT.xxxx field to reference without having to either run a test, open the sub-workflow or guess.

Since outputs are defined alongside inputs in sub-workflows, this should exist within the workflow metadata and can be added to the UI. (Maybe as light text around the "Publish As" field?)