"Law-enforcement officials also don't want to reveal information that would give new ammunition to defense lawyers in prosecutions where warrants weren't used, according to officials involved in the discussions."
Find those officials and indict them. Get them to roll on others involved, get them to roll, so on and so forth until you have everyone from prosecutors to judges to field agents to police officers to administrators to politicians; indict the lot of them for a criminal conspiracy to violate the civil rights of thousands - if not millions - of Americans. Indict the manufacturer too and open all of them to civil suits by everyone involved. In fact, just launch one on behalf of everyone affected.
Put a few thousand people in prison, bankrupt manufacturers, towns, cities, police departments, and individuals, and watch this kind of shit stop real quick. Such action would force everyone else to very careful examine how they treat the civil rights of both suspects and regular people who might get caught up in the dragnet. It would demonstrate real and lasting consequences for knowingly violating the legal rights of the people. It would bring us closer to a more just and perfect union.
Or we could just quietly sweep it under the rug and unwind the most untenable abuses while making some fairly innocuous details available to the public in the name of transparency. I'm sure that'll also work.