Go 1.11 and Beyond
One really minor, but powerful, thing I'd love to see from the Go team is a better designed documentation experience. Here's the Google-produced Github library godoc [1]; its absolutely horrendous to browse, as is any sufficiently large package. Compare that to Elixir's  [2] auto-generated documentation. There's a lot of work that can go into just improving that static HTML and making it more easily grokable.[1] https://godoc.org/github.com/google/go-github/github[2] https://hexdocs.pm/phoenix/overview.html