You can already do this at the OS level using a A/B Partitioning when making your Core Image. For the software level, well, snaps are basically that as they’re

You can already do this at the OS level using a A/B Partitioning when making your Core Image. For the software level, well, snaps are basically that as they’re squashfs packages. just snap remove them and erase your custom settings located on your home directory.