Yes it would be great to be able to fill cetain tanks and not others, I know on my 205 the option to not put gas in the wings would be great:)
Another thing that would be great is that since people almost always pork the fuel at the bases it is very rare that i can get a drop tank and 50% fuel, so it we can get 100% fuel and have only 50% in the plane why cant I take a drop tank, you see whear I am going.
The option to remove Gun and or ammo altogether for certain weapons that are forthemost part usless would be great.