Randy, Are you trolling
, or just stirring the pot?
Ok, I'll make a try at an answer to your question.
Our normal CCW rotation causes prop effects that tend to yaw the nose in, and push the nose up in level flight. Reversing the direction of the prop rotation will now change the prop effects so that the plane tends to yaw to the outside of the circle in our circular flight. This helps a bunch and contributes to tighter line tension at all times, when the engine is running. Such a change will also change the nose up force with standard CCW rotation, to nose down force with CW rotation.
So, is there still a need for thrust line adjustments? I suspect so. Simple logic says that it would be so, but I'd prefer some hands on experimentation before I fully committed to the idea. If it proves true, and I suspect it will, then with a Clock Wise rotating propellor, some upthrust may indeed be beneficial.
Further more, it might also be helpful to add a small amount of stab incidence adjustment. The amount should be small if using thrust line adjustments.
Going further;
An in-line design can be successful as has been proven in various designs over the years. Maintaining good control geometry will help a lot to cure variations mostly brought on by poor control system geometry.
It will still be necessary to make thrust line incidence corrections to help obviate the prop effects, which are not a function of whether the plane is in-line or not. These effects occur because the plane is flying with a single spinning prop, located in the front of the plane, while that plane is flying in a circular path.