But... didn't we also have some comments before about how Amazon's own control panel systems are all in one data center? If Amazon themselves don't 'get this right', perhaps it's because it's too hard, and they need to take steps to make this easier (or indeed automatic, and charge a premium)?
Those comments were in the wrong, and they were posted because parts of the control panel stopped working during the last outage. This was actually due to the throttling of the API, as mentioned in their write up.
AWS is resilient enough so long as you dont park all of your environment in the same AZ/Region.