Hey cragedus,
So we do have Multiple Party members with individual decks, however, currently each of their turns would need to be processed so they each have a hand. You are right that Party Type C would likely be the closest to what you are looking for. Once that plugin is done, we can modify it to better suit Fate G/O style card battles.
We will let you know once Party Type C is complete. Because that is dependent on Patron votes it could be a few months from now. If you would like more immediate updates, we would recommend keeping an eye on our community Discord as we directly post update announcements for the plugin there :)
Thanks,
MythAtelier Team