Is this coming out of MS Research as one of these "look, we came up with a way to do this" but it's not something that has a concrete use case? It reminds me of their MSR's project where they made a bootable operating system kernel in C# which, if I recall correctly, influenced the Midori project, elements of which have percolated into refactorings that have shipped with Windows 10. It also makes me think of F# which…
"We believe that, just as structured programming did years ago, this regularized programming model will lead to massively improved developer productivity, increased software quality, and enable a second golden age of developments in compilers and developer tooling."
https://www.microsoft.com/en-us/research/publication/regular...