While I'm too tired to read this thru thoroughly, I had to skim it and upvote it. This was actually my first thought when go was introduced. I don't see it taking over the web world, or the gaming world or anything of that sort, but I do see it being the next tool for multithreaded applications related to system work.
Go may never "hit it big" with the mainstream but it very well could find it's place in administration. That's what I hope to use it for as I get more proficient.