I think you're discounting how much having Google backing you adds to popularity. D has static typing, compiles to native, works on every major platform, and has been around far longer, but doesn't have near the adoption of Go.
It has a unique combination of features that I cannot find in any other languages
Unfortunately there is a disturbing lack of quality libraries. I have to write everything myself. Really everything. A few days ago I wrote my own string to int conversion.