More problematic is the idea that the right to elect a jury trial should be restricted to those facing charges carrying a maximum sentence of three years - the current threshold is three months. In practice this means dishonesty offences involving between $500 and $1000 and possession of (not dealing in) a class A drug and could save 100 jury trials a year.
But the real sticking point is the provision that would require the defence to identify and disclose the issues in dispute - which is to say, provide an outline of their defence - before a trial.
This has been characterised in political discussion as removing the defendant's right to silence, which is - perhaps intentionally - misleading. Such a phrase instantly takes us back to the sordid spectacle of the Kahui twins' murders, in which interlocking conspiracies of silence frustrated the attempts to bring someone to justice for the killing of the tiny babies.
A defendant would still be entitled to refuse to take the stand and a judge would have to tell the jury that no inference can be drawn from that refusal. But defence counsel would have to disclose their grounds of defence to the prosecution in advance of a trial, and if they fail to do so, a jury could draw inferences from that failure.
Unsurprisingly the three most senior members of the judiciary, the Chief Justice, the president of the Court of Appeal and the Chief High Court Judge, have expressed grave concerns at the provisions. They are "contrary to longstanding principle [and] inconsistent with a defendant's right" not to volunteer information that might help the prosecution. We should share those concerns.
Cases like the Kahui one make people boil with righteous rage, but righteous rage is not a good basis for a criminal justice system. And we should ask ourselves how we would feel if, unjustly accused, we were required to do the prosecution's homework.
Simon Power's intentions are good, but the fact that two parties from opposite sides of the political spectrum oppose him should give him pause. The bill can and should go forward before the election, but those provisions need to be removed.