Look at training records ...
Since this accident seems to be traced to poor airmanship both from the crew and from the technicians as well, I think that the judge in charge should pay a lot of attention to the details of the crew and technician training - in general.
Looking also at the details of the trainers as well ... At the details of the quality managers, the quality auditors, the "safety officer" ... all those who are responsible for overseeing the quality of the trainings, and improve the level of safety above bare legal (formal)minimums ...
I include the "authorities", who are responsible for effectively oversee the airline practices. Lot of people? Well, a lot of people lost their live, they desserve some real investigation.
If those who are "at the top" don't feel involved in this accident, they should be, by legal prosecution.