In my own experience sysprep is not necessary anymore. In fact, we abandoned it because it seemed never to quite work properly anymore which leads me to believe that MS forgot it existed and broke it in some Win 10 update (Thanks guys! [I hate you]).

On modern networks and storage hardware, reimaging a PC from scratch is sometimes faster than rebooting Windows after an update (and always faster than a "feature" update).

Anyone looking into mass image deployment should check out Fog[0], because it is free and works pretty well.

[0] https://fogproject.org