Makes sense to me.
All you would need is a message popping up when taking off that your fuel load was 25, 50, 75 or 100%
By the way MWHUN you can set your fuel without going to the hanger.
type command in message box before clicking takeoff direction
.fuel 0 = 25%
.fuel 1 = 50%
.fuel 2 = 75%
.fuel 3 = 100%
Pokie