From Lauren: "The current backup system has been in place for some time now and if it is not suitable or does not meet your needs I'd not only urge you to explain what it is, it doesn't do but also open a feature request for it using the link in my signature."
I know this is an old thread, but I find legacy backups very useful because I back them up to a cloud-based system that keeps several versions. If I need to to restore a backup, it's really easy to do so from my cloud backup system. But, as long as pkgacct is available, I can use that and send those cp move files to the cloud.