Immediate reaction; the entire air traffic system slows down. More delays and more late arrivals. Pilots will for really good reason have Duffy’s suggestion in the back of their heads and why wouldn’t they. That being said, bet money ground incursion events, or, close calls fall abruptly.
The days of hurry up get the customer, passenger to their destination at all cost are over. This will also happen in the air. The phrases “unable” and “say again” will become more widely used. All that being said, I don’t think it’s a bad thing. It is a move in the right direction regarding safety.
Technology advancements will improve safety as it mostly does. However, a pilot is going to protect their profession now, as they always do and should. How can anyone expect anything else to happen.