The idea is:
Show the main workflows using the currently open sub-workflow, the intended purpous for sub-worlfows is to make it easy to build, and to make systems modular where a certain sub-workflow can be used by multiple main workflows.
Knowing which main workflows are connected to a certain sub-workflow can be beneficial, especially when trying to replace the sub-workflow with a new version of the process.
My use case:
Know which workflows are using each of my sub-workflows, update all of them to the new version of the sub-workflow.
Are you willing to work on this?
Can provide mockups