This is awesome (let expressions in formulas!!), but Mesh Spreadsheets has offered most of this for a couple of years, and in a free, open-source form. Specifically: - arrays and objects living in a cell - mix of spreadsheet and textual views - functions in spreadsheet cells, and running spreadsheets as a messaging service (as a lambda function / API) - dynamic array sizes We deliver this by offering a grid view of (…
The problem is that your software does not run on top of Excel. Nowadays it is not as much of a problem, but in the past, Excel was often the only software you could use to do something like this - enterprise computers used to be incredibly locked down.
Thankfully IE11 has Office interop via COM, so Mesh (or a site embedding Mesh) can talk to existing spreadsheet investments.
And on the locked-down front, Mesh doesn't require IT permissions to run (unless JS is disabled in your browser).