I think they might have missed at least two huge risks: Abrupt Methane Release and Abrupt Sea Level Rise.
Both of these missing items seems to be fairly misunderstood – or poorly understood. Here is some further reading and speculation on abrupt sea level rise to consider:
I also think that Food Crisis ranks far, far higher (near the very top). No idea how or why they ranked this lower then unemployment, which simply makes no sense at all. Most of the climate change articles I’m reading all reference Food as a huge and significant problem.