I really have not seen anything material since windows 7 that would meet the bar of major improvement. Windows 7 with bug & security fixes, adding support for new hardware standards and SW developments, and feature evolution would be superior to what we have today IMO. Prior to win7 all the revolutionary "coming next" things either became impractical or were dropped.

I have a desktop that still runs all tripe-A games and is my main development machine running win10 that MS says is a boat anchor come the fall; this will be my last windows machine.

Microsoft has been pretty good to me as a developer (despite some of the technologies intentionally designed to do nothing but distract and consume attention) but the consumer side is a pathological shit-show and appears to really hate people (or at least love money more). MS looks a lot like the White House these days.