I'm keeping an eye on this project as a way to give containers used with immutable distro installs (eg. silverblue) a kind of user-space hibernation feature. So I could hibernate different container workspaces at will. I would find this very useful for development projects where I often have a lot of state that I lose whenever I need to reboot or whatever. Last time I looked there were still to many limitations on what it could checkpoint, but maybe one day.