Personally I think Elm is dying. It relies on a single language designer who works very very slowly. Since Elm came on the scene, vibrant languages with static typing for the front end have sprouted up and are better alternatives, like ReasonML if you want a language with static guarantees and workflow.
Elm could have been something, but I don’t expect it gain any mindshare, and the boat has sailed.
Clojurescript is a dynamic language, with easy JS interop and nearly zero boilerplate, so I still think it is the fastest route to a production app.
I'm curious to hear more about this. I'm someone who's used Elm at work, and on the side is interested in Lisp.