Out of curiosity, by how many minutes does the feeder fix time change on a normal day?
would an expected 15 min delay always lead to a minimum 5 minute delay 100% of the time?
Does a 5 minute delay always lead to a minimum 2 minute delay 100% of the time?
We can loose 2-4 minutes on the decent for little efficiency degradation. So if we know delays are 20 minutes into BNE, would it not be possible to assume you will atleast have 10 minutes holding, knowing realistically you will slide to 15 - 20 minutes given all other eventualities and if so is it possible to pass this information forward if one had the correct resources?
It's not perfect, however could be the balance, though it would be assessing the sequence at 500nm, not 250....
"ABC123, minimum MAESTRO delays of 5 minutes, speed reduction approved"