I do not disagree that Java, Go could be better. It is just that I remain big sceptic because such better languages leaves very important things which matter in

I do not disagree that Java, Go could be better. It is just that I remain big sceptic because such better languages leaves very important things which matter in real world and covered by Java, Go etc but not by better languages e.g tooling, GC, powerful runtimes, build tools and so on. I would wait till Scala does something great natively without standing on shoulders of JVM/JRE etc.