Simple solutions are being overlooked here - and it all stems from a botched introduction of the product to staff.

The training plan should have included a required to rope off the general lane until zones 1,2 and 3 have boarded. Include a timed pause between 'breezeway' boarding and general boarding from zone 4 up. Use the 'breezeway' product name on boarding passes (seems to be happening now) and in the announcements - don't say 'zone 1,2 and 3', instead say 'Customers with the word 'Breezeway' on their boarding pass are welcome to board at this time through the Breezeway lane'. Subsequent boarding announcement should include a note that Breezeway customers can board ahead of other customers by using their dedicated lane.

Had the product included proper field training from day 1, we wouldn't be seeing these problems. I can't imagine all of these stations having such a problem with the product if they were trained and informed properly - is it possible for field stations and agents to simply ignore product training flashes?