Regulation? I think you are clutching at straws with that argument, LB. The argument is a technical adaptation to fit the regulation. Video is just another data stream alongside audio and ADS-B. Granted, the CASA just love to be prescriptive down to what colour map is current. BUT, a manned tower is a cost in manpower and facilities to accommodate that manpower. A room full of ten or twenty remote twr stations in ML and BN is no different to a room full of TAAATS consoles, technologically speaking. Time will tell if technology wins again. however, if you are arguing about CASA and AirServices penchant for re-inventing the wheel then..how long is a piece of string?