i agree with most everything that has been said here, except that i think gold is being portrayed as some sort of high-traffic speed zone. in fact, i rarely encounter any cars when i ride through there. also, i think the narrowness makes it seem like cars are going faster, but it's difficult to drive through there and keep above 30.
the problem with it at night is that it's a bit remote. i much prefer going through polish hill to going up liberty, but that's only because it's a much more serene ride. at night, though, i might stick to busier streets. then again, i've ridden up gold at night plenty of times. it's a good route.
there's also a way through the secret back section of bloomfield that is pretty much a straight shot from the millvale bridge to the strip. it appears to be named, in various places, juniper, sassafras, neville, and lorigan. i don't take this route as often because the road surface isn't the best, and there's a rather steep hill in the middle of it all.