ring ring ring ring ring!!!
*snip*
Bananaphone!
I think it would be rather neat to see the Top Gear test track, but only as an added bonus, if you will. Think of it as a juicy replacement to Gymkhana and a flat, easy-to-make course suitable only for maximum of 4 people?
The nurburgring certainly is too fancy and big to be properly offered in a game's prelude, so it's unlikely, and, frankly, immoral.
Truly, I really miss both Grindelwald and Red Rock Valley. Both were wonderful circuits from GT2 and it would be a very cool move for PD to dig that far into their past. The same goes for Complex String of GT3, with the subtext that I never really liked that place...
And actually, is there any reason we can't pick from all the different geometric configuations of multi-path tracks? For example, there are a few versions of the American speedway which I would love to see (only "bus stop", and technical section without "bus stop").
Almost totally off-topic: Carrying on the theme from the previous paragraph, a recreation of GT2's "Special driving techniques" test, in which you do the tiny rectangle in an Impreza, could well be had by sectioning-off the "bus stop." It would be absolutely HILARIOUS to see that in the Course Selection menu. Also, it would be ultimate proof that GT finally has a sense of humour. Can you imagine 16-cars there?