SIDSTAR
I would expect the investigators to recommend Airbus to objectively examine the benefits of the system to see if it can be improved without transferring the problem elsewhere or creating a totally new problem, which I acknowledge is always a possibility.
Unfortunately, even rigorous testing may not test the combination of events that causes an incident. So, you might change something in the equipment configuration and test it for six months and declare it safe. Perhaps five years later, you will discover that a new set of circumstances has occurred and they met the new weakness in the system that you made.
However, you could change nothing and the exact same fault might be repeated in five years. That is the nature of the business of aviation.