Shen has the same problem as Idris and all the rest of the languages with more powerful type systems than Haskell: none of them are ready for production use. I

Shen has the same problem as Idris and all the rest of the languages with more powerful type systems than Haskell: none of them are ready for production use. I would absolutely love to be able to work in a more powerful type system, but the support just isn't there yet. Hopefully we'll get there in the next 5-10 years, at which point I will very happily switch over.