Alcapone
Not yet. But you don't need to access via ssh to enable nvidia drivers.
The easiest way is just to plug the usb-drive (or hard drive or whatever you installed batocera on) into another PC and then open the config-file with an editor (like notepad++ for windows for example).
I would recommend to do this right after you have flashed the batocera image to your thumb-drive (or hard-drive) via etcher.