Not to take anything away from your comment on this being a language that has been brewing for years, but people really should give Robert Griesemer more credit for his influence on the language design.
I know he's the least publically visible of the three, but IIRC godoc and gofmt are mostly his babies. After getting used to those I think I miss them more in other languages than I miss the concurrency.
Rob Pike is explicit about early Go development; everything that went into Go was agreed upon by Robert, Ken, and Rob. If all three didn't agree it didn't go in.
I know he's the least publically visible of the three, but IIRC godoc and gofmt are mostly his babies. After getting used to those I think I miss them more in other languages than I miss the concurrency.