Given that all the aircraft we’re discussing have powered flying controls, why is there such a discrepancy between loadings on different types (or even different variants of the same type)? Surely there must be an optimum level of feedback which allows the pilot to sense aerodynamic forces but allow the greatest accuracy when applying force to correct the flightpath? This is a universal interface problem which I presume was researched and answered a long time ago, so it leaves me scratching my head a bit.
It may be a gross generalisation but it would appear that most pilots prefer light to medium control forces over heavy ones and find those aircraft more easy/precise to control. I don’t think it’s a strength issue, more one of fidelity: if you’re applying large amounts of pressure to the controls you lose accuracy. So why deliberately build an aircraft that flies like this?