[throwaway914]

I think I'm misunderstanding what this can be used for, but something I'd love to see become "perfect" is preserving a GUI application state across reboots/logins/etc. Especially with flatpak GUI apps.

[astrange]

This is called image computing and Lisp/Smalltalk did it. Emacs has a form of it called undump.

I dislike it because it violates the "rule of least power". Basically, if you never have to validate your internal data, you can never tell it's corrupt.

[planede]

This is going to be possible with CRIU and Wayland applications. I saw a PoC with Qt that did this.

[yencabulator]

No part of systemd FD store is gonna survive a reboot.