The oldest parliamentary trick is to start with a policy so outrageous that any crumb of comfort looks half-reasonable.
The protection of inquests is that crumb, but what if grieving families and other victims want to sue the military, intelligence or political establishment for abuses of power?
We've all seen fig leaves like 'judicial triggers' and 'exceptional circumstances' before. They give little comfort to the claimant locked out of court while Government lawyers play to an open goal in private with the judge.
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In the unexpected announcement on Monday, Mr Key said it was the "right time" to leave politics.
As the Government's Brexit appeal comes to the Supreme Court, here's a look at what you need to know.
According to local reports, the man was found by friends in their accommodation in Val Thorens resort in the Alps on Sunday morning.