We have used AppViewX in our enterprise for a short time Here is what I found to be of interest.
1. Inventory of all F5 assets
2. Management of our certificates
3. Template helpful for migration from legacy systems to new systems.
4. RBAC allows other groups ( NOC ) etc to have non direct access to F5 and perform limited functionality.
5. Reporting features
6. Compare and rollback features are a must.
The challenges I see
1. Poor documentation.
2. Radius only supports authentication not authorization so you will have to manage all those other groups in AppViewX
3. Some basic features are not apart of gui but thats fine if your comfortable with command line... if not use a tool like winscp.