The original intent of Win8 was to provide a more controlled and secure environment that protect the user from virus and malware infection. The problem with that logic was that it needed the equivalent modern/metro apps, to replace the desktop versions for the heavy desktop user. That was an unrealistic outlook. It was doable for the average email and browser user (smartphone and Chromebook is sufficient for that).
Not satisfying the hardcore desktop users pissed them off and created no end of bad publicity which trickled down to the average user.
I am a moderate desktop user and really like Win8.1. I was ok with Win8, installed ClassicShell, and was not the least bit concerned about the lack of a start menu from MS. Since upgrading to Win8.1 I have removed ClassicShell and am quite happy with the TaskBar and Metro Start and Search.
The only Win9 feature, that I am aware of, that might be nice is running a modern app on a window on the desktop, but that is not a big deal for me. I switch apps quickly and easily either by a swipe or Alt-Tab.
I am in the minority but I think MS got a lot of bad and unnecessary publicity for Win8. Since Win8 came out I have purchased two laptops and did not consider (for even a moment) getting them with Win7. Just loving my sub 30 second boot and instant resume time.