I boarded a CX flight from SIN which take the idea to its extreme level. They fenced off a section of the boarding gate lounge for J (and I assume it is also used for elites and pax who require assistance and families with young children). Everyone there gets a seat, and board the flight at the appropriate time. The rest of the masses get held up behind the fence, and participate in the "scrum" while watching the elites board. I guess it works in SIN, but trying this in other countries may result in absolute chaos.