Well, I think the layout is good, under the circumstances. Open Google Earth and I think you will agree with me on the fact that is hard to find through the entire city "straights" like the one at the harbour, after the bridge.
The entire section after that "backstraight", ending in the main straight, was demolished to make room for the track. I think that was one of the reasons to pick the harbour: a city renovation project became intermixed with the design of the track, or so says the Major's Office (if I remember well what I read when the track was in the design stage).
The kerbs are interesting. They are 10 cm (4 inches) high, but they can help you, if you are smart.
From the inner side to the outer side of the track they are like this: at the track inner side they are flat with the asphalt surface. Then they rise slowly, up to the 10 cm I mentioned. At the "external edge" they "fall" abruptly. The end result is that they have a sideslope that helps you, BUT if you put the wheel outside of the highest point of the kerb then you "bottom out", because the kerb is 10 cm high and the cars are like 3 or 4 cm high, so you lose traction. They are metallic. I've never seen kerbs like that.
The walls are NOT close to the track, no matter what you say: there is only ONE wall where you can crash, at the end of the main straight, if I'm not mistaken. If there are too many debris, I think it would be feasible to raise the walls to make room under them for the debris to be expelled, if that were the case (I mean, to support them on small "columns").
I imagine the "noise laws" prevents the use of some sectors of the city for the track: from that point of view, the harbour is the ideal site. Thinking as a father, I believe that around the docks there are few babies trying to sleep (
if you don't count McLaren pit crew).
What I complain about is not the layout: I think is the best you can do under the circumstances.
I complain only about having three non-permanent tracks in the calendar. The cost is high for the promoters, the tax payers and, in the end, the spectators. I think that was the reason for the demise of Canada: you cannot pay for all the installations and dismounts every year and get a decent profit.
About the comments on how boring the race was, I agree (if I were a Hamilton fan I would be really, really bored
). Rubinho victory made it quite interesting, specially because it would be a miracle if an old timer, the guy with more races under his belt in history, ends this year as WDC. I think he deserves the championship much more than Jenson Button: while Button was sort of pampered by Honda, Rubens has been mistreated by his teams, the press and many fans.