Tbh, a better strategy would to slim down Windows again would be to remove all the new user-facing stuff which was added over the last two decades. There have been significant improvements in the kernel and DirectX, but on the surface, Windows somehow managed to remove user-facing features while at the same time adding an incredible amount of bloat in layers above the core operating system. From a usability perspective the Windows desktop UI in Win2k was singnificantly better than anything that came after.