I don&#x27;t think any of scala&#x27;s good features are even on a Java road map anywhere.<p>It&#x27;s actually a breath of fresh air to work on scala production systems.  We don&#x27;t use a mono repo and compile times are negligible.  We are also one of the largest scala shops in the country and despite the various styles used in different projects, it&#x27;s all been very maintainable and easy to read.<p>My main complaint is tooling and the fact that you do need good training to onboard the folks who don&#x27;t have scala experience.