license server essentials, to run all the individual servers as core or nano with the gui server being for management/business apps only
This will allow businesses on a small business budget to still be able to run secure environments. Often SMBs have to give an app vendor admin rights and it would be nice if it wasn't a DA account.
Tim Cerling commented
RE: giving an app vendor admin rights. Look into Just Enough Admin - https://gallery.technet.microsoft.com/Just-Enough-Administration-6b5ad370 The app vendor would need to define the specific privileges needed and for what programs. Then just enough admin privileges are granted for that particular task and nothing else.