Elixir is fast, has good package management, has a good standard library, exceptions are easy to read and debug, etc. Elixir doesn't have static typing, but it is functional, so it doesn't really matter as long as your initial assignment is correct. I can't really comment on IDE integration, since I never use anything but Vim.

Maybe the static typing and IDE support are enough to make Go awesome for some, but they don't really matter to me as much as concurrency, hot-plug code deployments, the actor model, and stability.