This is a strange request I'll admit but I remember back in the day MS Flight Simulator 3 allowed you to create your 'own' aircraft by setting the wing shape, area, weight, thrust etc..
Now, I guessing that AH uses a mathematical model based on many variables to calculate how a particular ride should fly, thus if one could create new planes by 'tweaking the nobs' so to speak, off line only, that would be a cool touch.
