You are right. It really depends on use cases. In many scenarios, a 5mb lib is just another dep that build tools such as sbt will handle for you. In many others

You are right. It really depends on use cases. In many scenarios, a 5mb lib is just another dep that build tools such as sbt will handle for you. In many others, 5mb overhead to a 500kb mobile app is obviously overkill. My use case is fine with Scala: no deployment issue, no Java legacy other than using a few libs, and everything else is fresh in Scala. So far I'm very happy with the choice. FP makes things really compact. I like Mirah for the fact that it can generate Java source code (vs. JVM bytecode). I would imagine there are many cases Java compatibility down to the source code level would be desired. Anyway, good job!