Aye, that's about the size of it.
It's not a perfect system, none are. There are 1000's dying all over the world through injustice of one form or another. I wouldn't advocate it as being compulsory in every murder or rape as, but I've no issue with it being an option available.
As an example, Huntley is a narcissistic type, who still performs when he feels the need for attention. Instead of feeding his ego and caring for him, I reckon we could make his bed available for others.
And no, it's not justice as such, it's a degree of vengeance and pragmatics.
Hindley and Brady played the system with that young lad that was still missing, getting back I to the attention they craved every ow and again. The threat of being out of the lime light if they didn't come clean on where he was, could have saved the poor lads family some torment.