I think this request, if it is possible to implement, will be a great feature for NS, as you said, especially compared to other distributions.
I think that who manage a complex system as NS, who knows what is AD, can deploy AD and wants to use the AD, in this case shared folders, sure will want and will be able to use such a feature.
More of that, I think those who use NS, have enough knowledge of IT system administration, even if NS is used at home.
Why I said that?
I saw that many of the home users, use NS in fairly complex configurations.
Cannot deploy NS as Gateway, Proxy, Mail Server, File Server, media streaming, Web Server, VM, ..., without basic IT knowledge.