I think you are deliberately making a mountain out of a molehill on this one. We have a problem ( the ability to move the rudder angle whilst racing) GD comes up with a simple solution and suggests it. Problem solved, move on lets deal with next issue.
Any thing more is just trying to create...
I am lost, what has locking the angle of the rudder got to do with the size of the elevator and the position of the rudder post.
Or is this just more of your moral outrage and misdirection.