Working on a big company with thousands of Citrix servers around the world running multiples version of XenApp and Presentation server is the perfect scenario to found removing MFCOM can be one of the big mistakes of Citrix on years.
In very distributed and secure environments with multiples domains PowerShell is just not working to manage remote servers as well MFCOM can do it.
I hope Citrix will release a Future Pack to provide full access to MFCOM soon, or adoption level of XA6 will keep low…. And companies will keep running old versions or migrate to XA5!!!
Nobody will rewrite hundred of scripts and tools to Powershell, because NOBODY are using PowerShell, maybe in a few years...