My feeling is that better training will be the cure, and not a massive overhaul of the FBW system
Yep.
It's been an expensive "lessons learned," hasn't it, this crash of AF 447?
It has cost dearly AF, 228 people and their families, and who knows how many others.
In its wake, it is likely that a good many AB flying folk (and organizations) have delved deeply into their machines and know them better now than they did on May 30, 2009.
To fly your aircraft you have to know your aircraft.
What was it we used to say in the Navy?
NATOPS is written in blood.
Looks like a few things have not changed yet ...