wimlib

Let's see if I understood
This is how you suggest me to do?

PowerShell

But there's no way to apply something like this in a transparent way because it relies on Windows System Compression feature, meaning that this could only be possible if someone create a custom driver that can read those WIM ...

Is there any way to integrate wimlib LZX compression into Windows explorer? To use in a similar way as "compact /exe:lzx" but taking advantage on the superior compression ratio of wimlib? Or even better, use LZMS with transparent compression

I'm aware of a paid software called ZIPmagic who claims ...