Aero glass works perfectly on w10 (as in the previous windows versions), just download the latest build
Last time i checked it was bundled with an optional w8 like theme, it works fine w or w/o it. Matter of personal taste.
I think that Windows is ugly from Windows 7 until now.Windows 7 was...the best and remains the best modern OS.
I looked to the current release. It doesn't ask anymore about the theme, and installs the w8 theme anyway. If you want the native w10 look just kill aerhohost and restart dwm with the task manager Then go to C:\AeroGlass and delete the w8 png and layout. Then restart aeroglass from the scheduled task app (or just reboot)
I noticed that on some old hardware's Windows 10 installs with basic Display Drivers and you have to manually update video controller driver or through Windows update. After that the resolution improves but looks are flat without the glass effect. Just go to Personalize and enable transparency.
honestly I was amazed when I had my hands on Longhorn the first time. You are right with characterizing that pre-os and as we all know it didn't make it but its prosecutor VISTA saw the light of the day and it had a lot of Longhornization on board