I thought the whole point of GUIs was, you didn't need no stinkin' admin.
Seriously, to admin efficiently, you need copious automation. A GUI layer on top of the automation is fine and dandy. But the admin needs to understand the automation, so he can can cope when it breaks and upgrade it to meet changing needs. Such admins are not cheap.
No, your engineers need to understand whats happening in the background. Admins need to know what button to push.