Malfeasance is one thing, but I don't think you want this kind of general liability for prosecutors: they're executing legal motions based on the evidence and i

Malfeasance is one thing, but I don't think you want this kind of general liability for prosecutors: they're executing legal motions based on the evidence and information presented to them. Unless there's some evidence that they're actually ignoring or hiding evidence, punishing them for playing their role in the justice system is likely to do more harm than good. (This is distinct from the problem of qualified immunity for the police, who (1) regularly kill people under dubious at best circumstances, and (2) regularly launder falsified or coerced evidence into the legal system. It makes sense, in my opinion, to introduce personal liability there.)