You can guarantee that some operators will be doing this. Try operating to one of the busiest single runways in the world and an aircraft bursts a tyre on the runway closing it, or the aircraft departing is slow lining up and you have to go around. The closest airports are refusing diversions and your alternate is at least thirty minutes away and you are the back of the queue diverting there. One of the big wheels at Easa operations, the part that come up with these initiatives used to be the head of flight safety at a european flag carrier, a carrier that had four hull losses during his tenure.