I think it exists. I would like to have a compiler that would speed the calculations and create a stand alone app.

In other words create a development environment out of it. I think it could create financial apps that can be easy to create and maintain overtime.

Revision history. Ability to take cells and create floating instances of said cells and attach them to other floating cells to create mix sheet amalgamations that don't need to be constrained to the grid format.

The only thing wrong is probably that spreadsheets can't handle huge amounts of data.

Probably set up some MSDN style docs for them.