Interestingly, the survey doesn't seem to consider education as a use-case of this - has your team considered that aspect? Spreadsheets are the most common way that school students are introduced to programming, and the only 'programming' that a lot of teachers (and others) do. There are heaps of reasons for this, but any even moderate programming (beyond very simple operations) in a spreadsheet sucks. Something like this (if it's easy out of the box) could revolutionise programming education (and data education for that matter).
Are there plans to get this working with the Excel web-app, or just the desktop version? I'm just having a daydream about Excel, Juypter notebooks, and OneNote Class notebooks...