At this point I also don't care if it's at the cost of backward compatibility, but they also need to fix the response times in the Windows UI. Given that high end games play very well on Windows, the OS is clearly able to process inputs fast enough. Yet for some reason when you're navigating the Windows desktop, everything seems to react pretty slowly.
Windows 2000 was the last version I was able to use without having my mouse hand cramp up. Something in Windows causes me to tense up my left hand (my mouse hand). It doesn't happen in macOS and it doesn't happen on Linux (Gnome/KDE/XFCE).