Have you considered lisp dialects? I've been working with Clojure/Clojurescript for a while and it addresses most of those concerns. It's been a real pleasure t

Have you considered lisp dialects? I've been working with Clojure/Clojurescript for a while and it addresses most of those concerns. It's been a real pleasure to work with. - There are lots of high quality libraries, but you also have access to the entire Java and/or Javascript ecosystem with very easy interop - Not too sure what you mean by "community coordination", but I've found the clojure community to be exceptionally friendly, welcoming, and responsive. The core team is active and I've even had some questions answered directly by them in slack! - There is some tooling built and maintained by the core team that makes managing dependencies painless - There's a library (transit) that's widely used and well suited for marshalling data in and out of a clojure app. There's a library that's part of the core which implements the CSP (communicating sequential processes) concurrency model, similar to Go. It works in both Clojure and Clojurescript and is a very sensible way to manage async operations in a system. - GC is managed by the JVM (for clojure), which is state of the art