You can have official legal findings whenever the system says you can have official legal findings. One option would be to close the loop and have the system prosecute itself (plenty of precedent). There are others.
Reinforcing the reliability of the system directly reinforces the legitimacy of the state's monopoly on violence - and that's an exceedingly big deal. Perhaps the cost-benefit analysis doesn't fall out in that direction, but I'm wary of that idea without a lot of evidence to back it up.