Seriously, in the 1970s, the Redhill (Surrey) RA were very keen on the two referee system and I actually played in a trial match against a Redhill RA team, using one ref (+ plus two linesmen) in the first half and two referees on their own in the 2nd. Both systems worked OK, but the idea never caught on, even within Surrey, with the lack of referees at grassroots level being cited as the main reason for sticking with one ref and two neutral or club ARs.