You're saying most DA's would take over an investigation from the police, hold some 70 public interviews on the case, and fix the ID process so that only a lax player would be picked? It's apparent that you haven't done your homework.
I have been involved with the criminal justice system for over 20 years so I have done my homework. Most DAs are much more interested in their own careers than justice. However, more facts will come out at trial. Until then we are all just speculating on the facts.