The default workflows should be visible on the "Configure status, workflows, and feature types" page. A read-only view would be fine.
One of the reasons for this request is that on this page you list which products are assigned to which workflows, which is a handy feature. However, if products are assigned to the default workflow, they don't appear. This leads to mistakes, because when dealing with dozens of products, it's easy to miss that one has not been updated to the correct workflow.
Also, it's nice to have the default workflow visible as a reference, as I consider it a best practice.
You can now create workflows at the account level and have them automatically applied when you add new products.
THIS
Seems almost like an oversight, can we please get visibility into products that are using the DEFAULT RELEASE WORKFLOWS? As an admin, trying to hunt down each of the offending Products using the wrong workflow is extremely tedious.