Google Earth helps, and its 3d geography that Marc pointed out is actually better than I thought it would be. It's still a long way off being completely helpful (or making it "easy") though. It's too low detail to help with the most crucial pieces.
We have the 2015 layout in the game already. There is one part of the road surface that is going to change for sure, and I'm re-checking all other areas after having been to the track for the race this year. Our base is solid, thanks, and we have our own quality standards.
It's great that you have found a version you prefer. I've been driving the Project CARS track back when it was in development, before our own modern layout was done as well. That's fine. There's plenty of sims and some versions of certain tracks out there. I don't like the thought of there only being one "true" version and everything else is crap, that misses the point of how tracks are made. I guess you could say it completely disregards the artistic element in making a virtual representation of the real thing, all those small decisions needed to arrive at the virtual version that make up the small elements in the greater picture (the trees of the forest, so to speak).
