I think one tool we can use that is in most of our radios is Exponential. I was resistant to it for years, but a pylon racing buddy talked me into using it to smooth out my laps around the course. It works great to smooth out your flying. The twitchyness is what I notice that makes our models not look scale.

Also, I think my comments in the other thread may have spurned on this discussion as well. The objective of the airplane I plan to build will not be for it to fly in a "scale" manner necessarily. The reason I thought of changing the tip airfoil to a more cambered section was so it would look more scale on the ground. Then use a clark Y for the rest of the wing to make it fly better or more easily. I say it at work all the time, "there is nothing wrong with making your job easier". I feel the same way about my airplanes. Nothing wrong with making them fly better.
Keep in mind, this aircraft will not be for scale competition, more of a throw around warbird. There is an important distinction between the two types of planes.