There is a variety of scenarios where the vCenter Server's SSL Thumbprint is needed when working with the vSphere API (e.g. using Cross vCenter vMotion) and ideally, this property is something that can easily be accessed natively via PowerCLI. It is possible today to retrieve using some PowerShell code, see https://gist.github.com/lamw/988e4599c0f88d9fc25c9f2af8b72c92 but its quite painful and IMO, this should be a nice property value that is part of a VI Connection