i would also love to see this
I'm also very interested in something like this.
On the first look it seems the game might be encrypting the save files to prevent easy modifications to it. This will make it harder to do a save editor for the game. The game might save locally but you can also expect it to save to the server or have some kind of anti-temper system in place to prevent cheating that way.
Honestly don't expect it any time soon unless someone started working on a save editor right after it was released this can take months to make. That is if someone will even bother cracking the encryption and another issue that can occur is that the anti-temper system would detect the edited save so releasing a save editor would be pointless.