Amusing that you talk about production support considering Go is by comparison a bit of a joke compared to the JVM. I can get detailed remote metrics through JMX and introspect running code with Java Agent tools like New Relic or AppDynamics.

I completely get what you mean about Go being simplistic and easier to reason than your typical J2EE app. But remember you don't have to write your Java apps that way. Unfortunately "design patterns" took off a decade ago and ended up dragging Java and many other languages into the complexity quicksand.

I hope Go learns from these lessons as it matures.