I think that Harsh's list is a good start if we want to get people who think of themselves as AI experts, instead of people who think of themselves as AGI experts. (The G is for 'general.') But in order to differentiate this site from Cross Validated or Data Science, we're trying to focus on the humanities / philosophy side.
I worry that this means that we're going to have a parade of AI 101 questions, like How does multiple intelligences fit in AI? or How does artificial intelligence Work in games?, which isn't an implementation or algorithms question because it's so broad and basic, or simple discussions of complicated issues, like the on-hold Why does Stephen Hawking say "Artificial Intelligence will kill us all"?.
And this suggests that the AI experts are going to become rapidly bored and leave, since they can't ask the questions they're interested in and don't see any interesting questions to answer, and so they won't be around to contribute to the humanities side of the discussion. What good humanities questions have we had, so far? My short list is something like:
What is the different between strong-AI and weak-AI? (though this is another 101 question)
Is the Turing Test, or any of its variants, a reliable test of artificial intelligence?
What limits, if any, does the halting problem put on Artificial Intelligence?
But that's three good humanities questions out of the 15 currently most upvoted questions.