I would like to be able to point hazel at a folder to back up all rules on a periodic basis. All rules would be backed up regardless of whether their folders are synced or not.
Importing a backup allows you to map folders in the backup to real folders on the machine.
This is to allow quick and easy restoration of rules when installing Hazel on a new machine. I've just had to do that and while I used to be more diligent it had been a very long time since I exported all my hazel rules. I recreated what wasn't synced rather than trying to dig through backups.