Thus, the desired effect of putting a senior prosecutor in jail for a ridiculously long time would not occur. Note however, that prosecutors have lost their jobs where clear misconduct took place (see, for example, the former Alaska federal prosecutors who took down former Sen. Stevens). Misconduct in this sense means something unconstiutional, i.e., hiding or destroying evidence. Playing rough in plea negotiations is not misconduct, since the other party does not have to play along and has the constitutional right to go to trial.
Note that there is no constitutional right to a plea bargain; that is an administrative convenience offered by the prosecutors to avoid going to trial. If a prosecutor offers you a really good plea bargain (i.e., 6 months on a charge that carries a max penalty of 35 years), you always go to trial. A generous plea bargain means that the prosecutor has a weak case. (This is part of the reason so many lawyers on HN having been defending Ms. Ortiz--based on the charges and evidence publicly known, nobody would have expected Swartz to commit suicide because he would likely have prevailed at trial and should have been advised of this by his lawyer.)