I was hoping to implement incremental backup myself for my scenarios, but the option to make backups without encryption was removed for no valid reason. Even if I make backup to the special dedicated completely offline qube, with a strongly encrypted veracrypt volume mounted, I still need to make backup with additional unwholesome encryption that:
- slows down the process,
- consume additional power,
- makes recovery process more complicated,
- makes it more difficult to implement incremental backups,
- … and adds 0 (zero) additional security.
This was done several years ago with an argument that incremental backups will be implemented in some future. We are still not in that future, unfortunately.
I am not sure Qubes OS even has a real priority list or roadmap nowadays. It’s one of the things that I would like to see in the development process.