With the change to the spawns, I always liked the idea of barricading the camera right-hand side. But having faced the same problem as Click, I have never fully had the chance to test it with an efficient team.
I believe the benefits of the right-hand side are that, due to the changed spawns, they only have 1 route of entry. They hit the 2-3 shielders, who stand in the middle of 2 heavy barricades on either side. Deployable shields cover the small walls, thus allowing ammo refill to be spammed. 2 light barricades at the back for archers to fire over shield wall. If all team members don't cross an invisible line drawn straight back to the wall inline with the ammo refill, then in theory the enemies wouldn't even attempt coming around the side and no protection would be necessary.
I believe the benefits of the right-hand side are that, due to the changed spawns, they only have 1 route of entry. They hit the 2-3 shielders, who stand in the middle of 2 heavy barricades on either side. Deployable shields cover the small walls, thus allowing ammo refill to be spammed. 2 light barricades at the back for archers to fire over shield wall. If all team members don't cross an invisible line drawn straight back to the wall inline with the ammo refill, then in theory the enemies wouldn't even attempt coming around the side and no protection would be necessary.