|Oh yeah, I remember this one since I live in Vancouver, WA. I gave it a 7, but you might have gotten a homer bonus. The biggest problem is actually the pine trees. Evergreens are impossible to photograph well (I find). They turn to black, muddled messes really fast, and here they take up a good 25% of the picture. I'm sure you were limited by your vantage points and the cost of renting a helicopter, but I think it's a detractor from the overall picture.
The colors are both nice, but also a bit drab. I like the blue (although I have seen better, deeper twilight blue) and the lights, but the rest of the picture would probably be better in B&W. I tried to covert to B&W and it didn't do it for me, but I also tried a selective desat of everything but yellow (with only a 50% desat on yellow). That was a bit more interesting, but I'm not sure it would have done much better. So I'm not quite sure which direction to go there. Did you use a polarizer? That can really make a nice color of the sky, even at twilight.
So overall a great idea limited by the trees.