[petecooper]

My first thought was along the lines of "what's left in macOS Server to make it a server?".

[Corrado]

I think the Update Cache and the MDM will still be there. Other than that I can't think of anything (major) that's not on that list. :(

Of course, both of those things are pretty big components of iOS management. Which reinforces the idea that Apple doesn't really care about anything except iPhones.