The idea would be that the facts of the case wouldn't be subsumed by matters of justice.
Right now, in most legal systems, you can't create legislation based on findings of a court other than the ultimate toplevel finding(s) — and those toplevel findings, at least in a criminal court, can only ever be about innocence/guilt for specific crimes, and can only ever be about the titled parties of the case.
This means that, if the justice system happens to discover an important fact about someone that it would be helpful for legislation to "trigger upon" — but that fact doesn't translate to their guilt in a specific specific crime that they are a titled party to a settled criminal case about — then there's no toplevel assertion for the fact about them to "ride in on" to have effect in law. So the law is effectively helpless to do anything, despite the court having "uncovered" that information.
Consider: a criminal trial for kidnapping of a child, where the child was being dropped off at a daycare center every day; and in the course of establishing motive, testimony from expert witnesses reveals that said daycare center was negligent in their care — perhaps criminally, though not necessarily so — but at least to a degree that would trigger the state licensing board for daycare centers to revoke their license... if the trial had been a civil trial about that.
Because the evaluation of the innocence or guilt of the accused for the crime of kidnapping, does not directly require the establishment of the "truth of the matter" of whether the daycare center was negligent, the testimony given in such a trial cannot be relied upon to establish negligence.
But, if the "truth of the matter" came first — as its own top-level inquest — and if it sought the truth-value of every claim made by both parties, hierarchically — then the result of the inquest could be used directly to decide both the guilt of party X in the crime of kidnapping, and the guilt of business Y re: both civil suits and statutory negligence.
Consider also: in such a system, you could get rid of the concept of a "class-action lawsuit." Class-action suits exist because the alternative is O(N) expensive and lengthy civil suits that each have to independently evaluate the claims of harm to a concrete party. But if instead an inquest is done into the "truth of the matter" of whether party X caused harm to a class Y; and then that fact became valid basis for any individual member of class Y to sue X and receive a summary judgement based upon the already-evaluated "truth of the matter" — then we'd have a much more useful system, where only the people who really do feel that they were harmed would bother to sue, and would each then receive damages sized to the harm actually done to that party. (Yes, I realize that this creates an unlimited liability on the balance sheet of any company who "falls victim to" a class-action inquest, given that there's no point at which they can say they've settled with all parties. Good! They should be perceived as permanently tainted by anyone looking to M&A with them — they're the corporate equivalent of a convicted felon!)