It seemed to me that we often parked with hot brakes, after landing Flap 30, Vref>150Kts, AB3 and/or "stomping" on the brakes to make turn offs. Whereas Flap 40, AB 2, Vref <150kts rarely resulted in hot brakes. Just my observations over the years!
And yet, a single check every flight (not years of trial)in the PI section of your QRH under 'brake cooling section' would have given you the answer whether you were close to having hot brakes/long turn around time and if indeed a Flaps 40 and /or maybe AB 2 was a better solution.