@Saiyato,
While investigating for possible Volumio user settings back-up/restore procedure (or plugin), I've been thinking about other Volumio plugins which may store plenty of custom data, such as...Kodi!
If I understand correctly, all Kodi stuff (settings, add-ons, etc) naturally go into /home/kodi/.kodi
How-about if Kodi plugin install.sh would create (if none pre-existing) a data sub-directory in /data/configuration/miscellanea/Kodi/, and then symlink /home/kodi/.kodi into it?
=> all Kodi data would go inside that plugin folder, and eventual back-up/restore procedure would nicely bring all Kodi data back effortlessly...
Quite useful for re-imaged updates, so that all Kodi environment can be saved and restored.
Makes sense?