[softwareqrafter]

You should probably also keep in mind that this isn't a consumer app. Who ever uses this will have seen the entire process before and tested it in a training environment. The redesign seems mostly to focus on making sure stuff isn't done by accident.

[ceejayoz]

I've seen video of police shootouts where the cops - presumably trained on such a thing, plus daily exposure to tense situations - miss repeatedly from just a couple feet away, trip and fall, and otherwise screw up.

Training is not a replacement for good design. It helps, but I'd expect someone genuinely thinking they're about to be nuked to act differently than someone participating in a drill about it.

[olliewagner]

I would imagine that the operators of the current UI were trained on it as well. What the OP posted is certainly an improvement, but could be made bulletproof by showing each choice in context alongside a button that you can't accidentally trigger.