I didn't hear the whole thing yesterday, but didn't Nathan say that custom championships are going to be there soon? I know, I know, queue the sarcastic comments and eye rolling. But I believe that was said, since it was something he had wanted and they told fans would be there. His words were something like 'I didn't know they weren't in there and I was very mad when I found out, because we had said that was something we wanted. They're going to be in there as soon as we can'. I'm completely paraphrasing here, but I think it was basically that.
I'm a little disappointed in some aspects, but this is the first console (PS4) I can remember that doesn't have this type of game yet. We haven't gotten a true GT game, and the other games with this type of customization have all been straight up arcade games. We have some hardcore sims, we have arcade, but I don't think we have something like this.