I can only give my own biased opinion: Go's only advantage is it's commercial adoption e.g. builtin in support in AppEngine and co. I am not referring to it's ecosystem: While gofix and friends are very good, D has similar tools available + the usual bells and whistles for IDEs.

By chance, I found (while looking for a rob pike quote) this article critiquing Go's design: It uses D to demonstrate it's arguments. http://nomad.so/2015/03/why-gos-design-is-a-disservice-to-in...