Bad Idea

Of course, that means that someone will probably require that it be done:

• A group of attorneys specializing in wrongful conviction cases are scheduled to meet with city lawyers Friday to try to hash out how to properly inventory thousands of old homicide files contained in police station filing cabinets in apparent violation of the department’s own policies.
  
  The attorneys believe the cabinets warehoused at the city’s three detective headquarters may contain crucial “street files” that were never turned over to homicide defendants as required.
  
  An inventory of the cabinets might provide proof that for decades Chicago police handed over only a sanitized version of its investigative files before trial, withholding information that could have helped defendants serving long prison sentences, according to the attorneys.

No surprise that Loevy and Loevy are heavily involved. They likely view these file cabinets as long lost treasure chests that they can data-mine for cases running back decades. We'd be likely to see "reasonable doubt" generated in cases half-a-century old where witnesses and investigators and victim families have moved, retired or died coming up in the courts and murderers being freed. Not only that, but investigative methods since disallowed by the Courts (but perfectly legal at the time) would be applied to meet certain ends - lining lawyers' pockets.