@Eekz, there needs to be a serious increase in the amount of AA Guns/Flak at the airfields. 2 or 3 guns at each field is completely useless, and as long as you don't fly straight down the barrel of the guns you'll never get shot down. The airfields need to have a realistic amount of Flak at them, at least 8-10 gun emplacements.
This problem is made much worse by the airfields being only 30 miles apart with 20+ pilots on the server.