[dragonwriter]

I think the main reason people choose to use Excel the way they do (aside from lack of choice resulting from policy, etc., decisions) is the easy, no-coding onramp to building things (And tools that let you do coding aside from what is built into Excel would likely, for those policy constrained, fall afoul of the same constraints.) So, I suspect a compile-to-excel language helps anything; the people that need it won't use it, the people that would use it already have many ways to use traditional programming languages to produce apps that the end-user accesses through Excel.