That is what the image backup is for. You would only need to restore those system files if the system was hosed in some way. As you know, you can restore iindividual files from an image backup, but in my experience restoring an individual system file rarely fixes anything.
One thing we have always done is to include system directories (including appdata user folders) in our local backups since there is no cost to do so. This can lead to errors however, as some of the files are temporary and are present when the snapshot is taken, but disappear by the time the system goes to do the backup. (things like roaming profiles).
Hope this helps.

This is a very late reply, but thank you Steve! Your response was very helpful.

sorry for late reply! but "Do not back up system and hidden files" option best practice is you can improve backup efficiency, reduce storage requirements, and prevent issues during restoration.