The MCAS system is only needed to enhance stability with slats and flaps retracted at very light weights and full aft center of gravity (CG). The aircraft exhibits sufficient natural longitudinal stability in all other parts of the flight envelope without the MCAS to meet the rules
So says
https://aviationweek.com/commercial-...432ab9ddf59858
To me it begs the question how light a weight, and how can you manage to be very light and have a full aft CoG.. I wonder what the constraints would be if the MCAS was done away with ie impact on weight or CoG.