This is the key requirement for an 'office killer', but also the one all these challengers want to convince themselves they can get away without. I'm certain it

This is the key requirement for an 'office killer', but also the one all these challengers want to convince themselves they can get away without. I'm certain it would require a tremendous amount of labor. Really, we need something better than Excel, which can bring Excel jockeys out of the weird ghetto of macros and into a true scripting environment. Google has made a valiant effort in this. But in order to get anyone who matters to even look at it seriously, you're going to need to offer compatibility, first.