I agree that a full backup does not need to include a profile.
I've added the option to require the profile even for a full backup, as it can be useful for backup softwares. We could remove the option and build the profile only during incremental backups, if required. However, I would avoid the needing to scan the whole backup to know the size of the recovered data directory, hence the backup profile.
I really like this approach.
I think we should leave users the ability to ship a profile file even in case of full backup (by default disabled).
