(not sure if this has been mentioned...) There's been a lot of user feedback, especially mobile about accidentally purchasing CWs during browsing and I hope we could eliminate that by adding CSC storage to the vault.
It could go right under the sP Storage section.
Backup Option: Customize Sidebar > Preferences > Notify before CSC usershop purchase Enable/Disable
there's an active thread here suggesting CSC storage.
as for your backup option, that's pretty much this suggestion
please post your support on one or both of those threads!