You've demonstrated the fundamental difference. Many Limited companies now have CRM (Customer Relationship Management) departments that promote the product, lend a sympatheic ear when something's going wrong, survey the clients (why didn't you renew membership etc) the CRM department then records the number of complaints etc and passes them on to the Sales department, Service department, Dealer etc in the form of a righteous admonition to do better in the future, and receive asnwers from the experienced field people in return. The RAA Ltd Company as a Self Administrating Body also has the duty of care/responsibility to handle every aspect of the aircraft class they manage.
The Incorporated Body has the same duty of care/responsibility butgets some Government protection for its officers who, by its definition are elected in every State and Territory. Under self management you can administer however you want to achieve the end result. You can appoint Stewards or Field Managers who arew close to the airctaft locations and can inspect them on a regular basis, you can appoint flying Stewards to manage skills and behaviour, you can have a risk management Committee and you can have a Promotional Manager or Committee. You can have a Specifications Committee to decide what new types of aircraft to admit and to phase out types no longer needed.
You can have regional meetings, State meetings or Federal meetings and so on.