I really do miss Seattle like a lot of people, I used to run a bi-weekly time trial competition on GT4 with a mate and had a week off work when it was Seattle's turn. We used to run a few different classes every time and I got so good with the Shelby 1, it helped me understand tuning so much more and I caned him by about 2 seconds. I think he beat me in the Group C class but still, that track is awesome and challenging to get spot-on, I'm gutted it isn't in GT5.
Seoul was very enjoyable, a bit short but the reverse layout had a great flow to it, couple of fantastic corners.
As has been said on a few other threads, what have PD been doing for the past 6 years? Over-modelling interiors that most people don't actually see is what it looks like they've been doing, some people used to call GT games car porn, GT5 is the finest example.