Well, this has been brought up before, but I'd get called an idiot for bumping it anyways.
We need this feature. The longer your on fire, the more your plane becomes sluggish. You CAN dive to extinguish the flames, but if you dont extinguish them between X amount of time and X amount of time (HTC can model it), you get what happens to any plane right now. If you do, you get more sluggish controls and damage.... etc.