In my humble opinion, it looks like an unfinished and very buggy operating system like the previous versions. When I resize the file explorer, there is still a black area at the top right corner, this bug was already in Vista and even XP. The performance of WebGL is still noticeably worse with Edge than with Mozilla Firefox and Google Chrome, it's a bit less catastrophic than with Internet Explorer. Some design choices are completely counter-intuitive to me, I don't understand why some build-in "apps" have a colorized bar at the top and others just have a white bar. When you have to mimic the behaviour of this OS in a Java software, you might spend some time in looking for the expected "natural" appearance to provide a comfortable integration. The very thin border around the windows is almost invisible, is it really useful? Now the resize cursor appears only when you move the cursor close to the border inside of the window, not outside, I find it just weird. Microsoft's transparency seems to be less bad than Google's one but some sentences of the 23 pages in the privacy statement are enough to confirm that this operating system will never get installed on my computers at home. "Freedom only wears out when it is not used". The secure boot is a nightmare when you want to switch to GNU Linux.
I'm still under Mageia Linux Ghostery and uBlock are enabled