Couldn't agree more. Hunting around for a new language to do large scale concurrency in, I had shortlisted Clojure and even Golang, but the Phoenix presentations (and BEAM) tipped it for me. I also appreciate the fact that the Phoenix guys constantly address the need not only to target the browser, but other types of endpoints "beyond the browser" with transport adapters, CoAP etc. Certainly has gotten me to buy a bunch of Elixir books recently to get into the ecosystem.