There are numerous places I find Scala has preferred brevity over readability and it does not take long for that choice to take it's toll when you have many people working on a project. Yours is a perfect example. Another is allowing multiple ways of importing such as allowing relative imports. When I've tried to use Scala it's much more of a pain to figure out where some classes are coming from whereas in Java it's immediately obvious from the import at the top of the file.