Hi Michael,
As you said there is no tool can help see the replication progress.
You can create Diagnostic Report to test the replication process. Meanwhile, if DFS works improperly, related error messages can also be found in Event log. You can create a task to send an email to admin when a DFS related error occurs.
Shaon Shan| TechNet Subscriber Support in forum| If you have any feedback on our support, please contact tngfb@microsoft.com