I haven't delved into Go, but have occasionally "glanced" at it with curiosity. One of the most powerful principles I got a whiff of was that it was designed up front with the goal of providing a powerful tool chain -- an open parsing library and the like.

That provides some incredible power and may be the thing about Go that impresses me the most.

What if we also made programming language decisions about syntax, modularity constructs, etc., all with that goal in mind? (And perhaps Go has to a large degree).