If anyone is desperate for another alternative to AeroGlass8+ (Although nothing will ever be as good, compared to what bigmuscle gave us).
The two software's do require a fee, but i'm sure there are work arounds all over google to make them obtainable without a trial limit...
WindowsBlinds 10 - Works as intended with update 2004. The only downsides are that you're required to download skins yourself over DeviantArt for Vista Aero skins.
WindowsBlinds - https://www.stardock.com/products/windowblinds/
Skin here: https://www.deviantart.com/fediafedia/art/Aero-Ultimate-FINAL-81684745
I hope bigmuscle can grant us an update for 2004 for, atleast for early 2021! At this rate, i'm thinking of moving back to Windows 7 just for aero. But this method works best for me now. There's just no see-through transparency, just blurred.