What if you required a certain amount of points or more to ask a question? HN already has good software to deal with voting rings, so we shouldn't get too much

What if you required a certain amount of points or more to ask a question? HN already has good software to deal with voting rings, so we shouldn't get too much karma whoring in response. Plus, people would have to invest in karma, because once the AMA is announced for the following day, or for right then, it's too late to get 300 (say) more points. I think it's workable.