It wasn't because folks were flying at full throttle. It's because the fights are a mere 20 miles (4.1 minutes @250mph) apart. To replicate the burn on distances between fights, the scrunched-in airfields are coupled with a higher fuel burn. This is also not perfect, as it only compresses flight time in level flight, not in climb.
It's this way for a reason. You can already take 25% in most planes and have enough time to furball your brains out over the nearest enemy field, then die or cruise back home after 5-10 minutes. (It takes less than 3 minutes to get TO and FROM the fight, remember?)
My advice: Do as we all have for some time, deal with it.
