For being a concept. I got to say it looks nice in some ways. Aside from that. It still reminds me of windows 11. Not that I have any complaints about Windows 11.
I do like how it transitions from theme's and so on. I thought the XP wallpaper animation. Gives that Windows Vista dreamescene if I remember it right that what it was called back then.
I suppose a lot of people miss Windows XP. I surely don't the look was in my opinion getting rather old. It's why when it was easy to mod the .theme I had all sorts of themes. Though my theme days ended with Windows 7. Ever since I just don't see the purpose of themeing the OS anymore. Plus it's not as simple as it once was. I mean sure there programs. Though I just liked just being able to just mod the files instead of using a third party program for themes.