Strongly inclined to hire such a prosecutor. Has this model been successfully deployed in any large U.S. cities? My only experience is watching it struggle in a medium one.
On your last point: given the ethical responsibility of a prosecutor, I’d go one step further. If you’re the prosecutor for a jurisdiction where a journalist works, and you make any statement about the legality of the journalists works, you better be substantially likely to secure a conviction, otherwise you should mind your business.