Spymaster
Plastic Paddy
A defence or mitigating plea of insanity/diminished responsibility has been a factor in the UK legal system for centuries. Are you really content to remove that?
Seriously? I'm not sure how many times I can answer this for you, so I'm just going to leave it.
At least have the courage of your convictions and argue that you don't think mitigation should apply in some cases.
But I do think it should apply. I just don't particularly care if we get it wrong in the case of mass child killers and terrorists.