Another advantage is that if you pay random citizens full time to oversee the government, they will be able to talk and negotiate with each other directly, they

Another advantage is that if you pay random citizens full time to oversee the government, they will be able to talk and negotiate with each other directly, they will have the time to actually study and think about the issues, and they will be able to subpoena the information they need to take good decisions. If you want people to vote meaningfully on issues, you have to empower them to cast the very best vote they could cast, and demarchy is basically the only way this could be done practically in a large society. The concept of a general election or general referendum is aberrant.