One of the problems highlighted by the investigation was inadequate pilot training.
Why don’t the various National Pilot Unions alone or better still in concert devise their own Standards of Simulator Training for different categories of commercial flying; then use this as a benchmark to judge the quality of training given by companies. In this era of transparency publish the results on the web, with a section for the company to reply to any criticism if they wish, and give the Public / Journalists more information to make their Carrier decisions.
Perhaps this is already done; perhaps not. It would at least open the area for more debate and scrutiny.
Just a thought