Just to be clear, there is a material and legal difference between refusing to give information to the media or a victim's survivors, and refusing to give information to an investigating agency. As slow as the pace may have been, does anyone really doubt that the prosecutor, internal affairs, and whatever other government agencies were investigating did not have the officer's name and other information readily available?
Put into another context, should an LAC shoot some violent gang-banger would you really expect that LAC, his friends, or family to give up his name, location, or other information to the media or the fellow "club members" of the deceased gang-banger? Witnesses would be expected to cooperate with the police and other investigators.
In a case involving a government employee, we might legitimately argue for greater transparency with the media/public than might be demanded of a private citizen. On the flip side, given how officers involved in perfectly legitimate (if arguably preventable) self-defense shootings have faced personal threats and bounties, it is easy to understand why fellow officers would adopt a position of not releasing details to the public until required to do so.
Let us also remember that under our Constitution, it is the accused (not the victim or survivors) who is constitutionally entitled to a speedy trial. (I know that doesn't technically include a speedy indictment, but I think the general principle holds about who has the real burden if justice is delayed in a criminal case.) Assuming the outcome of the trial is just, then justice is served even if it took longer to obtain than if the defendant had been a private citizen rather than a government employee. Except to the extent that delays are the result of attempts to protect the defendant from the claims of the criminal justice system, rather than something less malicious, I don't see much to be concerned with over a slow pace. I'd rather a case be properly made slowly, than brought to trial in haste. That remains true whether it is "obvious" to the public that it was bad shoot, or whether it appears to be a legit case of justified use of force.
Charles
