Woah there. Neither a "not guilty" verdict nor a case overturned on appeal means that the person was actually innocent. It means that there is not enough evidence that was judged admissible to convict. (This is a consequence of "innocent if not proven guilty" - or at least, not jailed if not proven guilty.)

Putting prosecutors on trial for something less than clear prosecutorial over-reach is, in my view, a major mistake. Perhaps the bar should be lower than it is, but there's no way it should be as low as "didn't get a conviction" or "overturned on appeal".