In an update to MAC today, TSA said it was considering eliminating the PreCheck lines at the (old) South Checkpoint and consolidating PreCheck entirely at the (new) North Checkpoint. The idea is that it would allow PreCheck to shift up to four, five or even six lines, and that they could concentrate the passenger screening dog teams at the old South Checkpoint with regular security. Decision to come soon. But I'm supportive of anything that makes PreCheck move faster.