UI usefulness and flexibility
Concerning your UI, your lists should be more manageable. Why is it for instance that on the Relay menu you can only sort by the Workflow name. What if I want to sort by the user so I can more easily find workflows created by a specific user. Same is true for the list of managed users, there should be more fields on the list such as Date Created, Created By, and Status. Your reporting module also needs more flexibility in the reports an admin can create.