Two points:

(3) What happens when it fails to behave in accordance with human intention?

NAI: It crashes, freezes or halts. It generally fails in a way that is harmful to its own functioning. If for example an autonomous car fails at driving autonomously it usually means that it will either go into safe-mode and halt or crash.

GAI: It works perfectly well. Superhumanly well. All its intended capabilities are intact except that it completely fails at working as intended in such a way as to destroy all human value in the universe. It will be able to improve itself and capable of obtaining a perfect encoding of human values. It will use those intended capabilities in order to deceive and overpower humans rather than doing what it was intended to do.

Firstly, "fails in a way that is harmful to its own functioning" appears to be tautological.

Secondly, you seem to be listing things that apply to any kind of AI in the NAI section - is this intentional? (This happens throughout your comment, in fact.)