I had the opportunity to work on a IaaS platform developed by Chinese people few years back. It was not the state of the art product but one feature was absolutely amazing : there used to have a little button called "reset password". I have absolutely no idea how this could be done under the hood, but the password of the admin account (either root or Administrator) was changed by a random password. This random password showed up in the interface briefly, just enough time for you to copy it in the clipboard. Then you get access to the VM.
This is sometimes very handy, when you need to access to a VM that is switched off or that you forgot the password because you are not using it every time. I already proposed this idea to Nutanix staff a long time ago, that could be great to see this feature landing on the PE interface.