It's not necessary for me to show some diagram on how forward CG helps, I agree with the latest update on this thread in which the aircraft can be improved with the proper CG location. However on my previous diagram, it just the same thing except it's not horizontal but with AOA where an aircraft can generate more lift and drag at higher coefficient. As we can see from the horizontal drawing that the tail down force (T) is getting higher when CG moves forward.

T = W * dw/dt (not derivatives but the ratio of distance to weight center and tail from landing gear)
where dw = dLG - dCG
and dCG is the distance from CG to LE

T is a force generated by dynamic pressure acted on the surface of the tail with respect to angle and air velocity. In other words the trim varies with respect to airspeed of an aircraft at constant CG location...

Well, I agree, it’s all depends on the flying style, design, application of an aircraft as well as the structure that varies with respect to speed and stability...

Thank you for all of you guys for sharing your valued input...