Of everythng I've read about W10 the primary reason I won't "upgrade" is the end-user has no control over updates. Can't deny them, can't delay them, can't select which they want to install, etc, and with MS's history of severely impacting some systems with their patches and updates, even bricking some boxes, I won't "upgrade" until absolutely forced to. I'm going to keep using some variation of Linux/BSD for my everyday online box. Sticking with 8 for my windows box which only went online once to register and get a few updates for Samplitude and now is used strictly offline as a DAW.
In the meantime I'll read your impressions of the latest OSAS (operating system as a service) from MS.