Windows Essentials Server virtualization (licensing feature)
Please allow in EULA that the Windows Essentials Server can used as HYPER-V Host not only for himself, also for other HYPER-V guest. That would be an important feature small installations. Many small installation prefer a GUI on HYPER-V host.
Andrew Macaulay commented
I have a specific use case (home user) where I would like to be able to run some home automation software (which happens to be Linux based) on the server, so HyperV in this instance would also be ideal. As it stands I will probably have to run it under Oracle's VirtualBox :-(