It's a fine concept. Good for replacing stuff like appimage besides the packaging part? Mixing this with OS package management will require some consideration.

It's a fine concept. Good for replacing stuff like appimage besides the packaging part? Mixing this with OS package management will require some consideration. So they are using overlayfs, which means that "upper" directories have visibility precedence on file name conflict. Which means that some auditing facility should be required that alerts if an upper sys image masks a lower one, or if an OS package some time later installs a file to the "lower" directory, perhaps the original rootfs, but a sysfs package still takes precedence…