Do I think there is enough content for the sticker price......hmmm......I'm going to say yes, now obviously it doesn't have the "400+ CARS" banner of games like GT and Forza, but each car is meticulously created, and they all feel genuinely different, and each one needs quite a number of hours in it to get the most out of each car.
The same goes for tracks,but the environments are diverse enough to mean that every one needs a different driving style to tackle it.
Would I like more content?, well, if they ever released DLC, I'd be all over it, but the vanilla product has a lot of hours worth of driving in it, some desert stages would have been nice, Australia or Africa.
Yes, there is rain and windshield affects, but the weather is fixed, and isn't dynamic.
It's hard, properly hard, you will crash, you will feel like you can't drive straight but it takes patience and practice, and you will get better, although each new class of cars feels like going back to square one again after getting comfortable with the preceding class!