As much as I'm thoroughly enjoying the game and think highly of it, Sony/Polyphony would be stupid not to consider some of the negative feedback.
I understand and appreciate what they're trying to achieve with this game, but as with anything, people generally don't take kindly to sudden or dramatic change. Polyphony should have eased people in, by offering a more traditional career mode, but still introducing all these new elements, especially around sportsmanship and eSports racing.
Given they already have so much of it in place, would it really have been so hard to just put together a career mode that is essentially just a collection of races from the content already present?
Hopefully they make a mends through free updates and DLC.