Except that the people in the legislature would have little to no knowledge about how things work, and so would heavily rely on the advice and expertise of the bureaucrats and lobbyists to know how to move on various topics.
With experienced legislatures they know the system and when someone is trying to pull the wool over their eyes. Some people bemoan "career politicians", but in what other profession does (more experience = bad)? Carpenters, pilots, developers?
