For instance, when a pack I'm using has default options, but sometimes they add a new mod that requires them to send that config that overrides all of my changes. If my data was stored in a cloud, I could could load it back with defaultoptions.

I would personally make it compatible with a local directory store, Google drive, Microsoft one drive, and anything that excepts ftp ssh.

This feature would probably be more suited to a mod like OptionSync which already supports the local directory store.