Nice. Good job reducing UI and common interactions to a minimum. The auto-updating structure on the left also encourages a proper hierarchy for the document.
As a designer I'd like to thank you for this post. This recent fad of "infographics" (some text in rectangles + pie chart) is quite sad. These things are information graphics about as much as fake lens flares were graphic design in the 90s.
Side note: are you serious about people paying for this?
An A0 piece of paper has an area of exactly 1 square meter.