I have been watching and trying Fable for two months after I wrote a demo in ReasonML/BuckleScript, because I need a full-stack language for my side projects and Fable is much complete and stable, and the backend story is also much better than OCaml or BS bindings for Nodejs.
Thanks for your linking! Just in case, the lodash might not be a big problem since I have already using babel-plugin-lodash, it won't bundle the whole lodash in the final bundle.