I feel like "not having a succession plan" should be a fireable offence on its own.

Otherwise you end up thinking "should I start an affair with this Chinese spy I've been breaking US laws with? What are they going to do, fire me? They can't, I've got them trapped so I'm untouchable, I can do whatever I want. And if I'm in a helicopter crash then it sucks to be them, I'll not care when I'm dead".