[Jare]

The language is large, supports multiple paradigms and in general allows many different ways to express the same thing. That's great for short term productivity and/or small and tightly knit teams, but I worry about less ideal conditions. In theory a strict and well defined style guide should take care of that (I have used them successfully in C++), but I feel with Scala that will not be enough. Expressed differently: Scala is a great language for smart and careful programmers, but a ticking bomb for the less talented masses.

Golang, in comparison, is very transparent, WSYIWYG.