BMD just released the new Video Assist and it opens Braw to any camera that has sdi or hdmi raw output. But the sensors must first be profiled by BMD. So theoretically the Nikon 6 /7 should be able to use the new bmd however the n7 needs additional hardware. The 7 inch VA includes two xlr inputs and a mixer to add audio .
Well the lumix S1 and the Nikon 6 and 7 will output raw but I think from hdmi which is now capable of raw. and as i read the new va will input raw from hdmi