I think one issue might be that everyone knows about this question and primed by the earlier comments on the importance might end up over optimising this. There

I think one issue might be that everyone knows about this question and primed by the earlier comments on the importance might end up over optimising this. There might end up being lots of really impressive answers to this question that didn't correlate well with results. In earlier rounds when less people that were applying knew the question it might have been a better indicator.