What we really need in an ideal world would be graphs made up for a typical single, light twin, medium turboprop and light jet........and the rest ????
These could be used as a basis for other models in these categories and adjusted to suit
Ideally we should roughly measure the forces and time the pitch changes as well as measuring control movement.
Measurement and data need to be collected for yaw pitch and roll, until a feel picture is created.
Im sure aircraft manufacturers will have fitted electronic sensory devices to aircraft to collect this sort of data and would have those graphs somewhere?